Stage IIIA Ovarian Cancer AJCC v6 and v7

Stage IIIA includes: T3a, N0, M0.  T3a: Microscopic peritoneal metastasis beyond pelvis (no macroscopic tumor). N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Ovarian Sex Cord-Stromal Tumor, Not Otherwise Specified

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A sex cord-stromal tumor that arises from the ovary and lacks the morphologic features that belong to the categories of granulosa-stromal tumors, Sertoli-stromal tumors, or steroid cell tumors.


Recurrent Malignant Ovarian Brenner Tumor

The reemergence of malignant ovarian Brenner tumor after a period of remission.


Stage IC Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IC includes: (T1c, N0, M0).  T1c: Tumor limited to one or both ovaries with any of the following: capsule ruptured, tumor on ovarian surface, malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


FIGO Stage IIIA2 Ovarian Cancer

Ovarian cancer with microscopic, extrapelvic (above the brim) peritoneal involvement +/- positive retroperitoneal lymph nodes. (FIGO, 2014)


ovarian endometrioid stromal and related neoplasms

A category of rare neoplasms that arise from the ovary. It includes low grade endometrioid stromal sarcoma and undifferentiated sarcoma.


Ovarian Neuroendocrine Carcinoma

A small cell carcinoma, pulmonary-type or large cell neuroendocrine carcinoma arising from the ovary.


Borderline Ovarian Mucinous Tumor/Atypical Proliferative Ovarian Mucinous Tumor with Microinvasion

A low grade ovarian epithelial neoplasm characterized by the presence of neoplastic mucinous epithelial cells, atypia, and microinvasion of the ovarian stroma.


Stage IV Ovarian Embryonal Carcinoma AJCC v6 and v7

Stage IV includes: Any T, Any N, M1. M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Borderline Ovarian Mixed Epithelial Tumor/Atypical Proliferative Ovarian Mixed Epithelial Tumor

A low grade, non-invasive mixed epithelial proliferative neoplasm that arises from the ovary. In most cases is composed of serous and endocervical-type mucinous cells.


Stage IV Ovarian Cancer AJCC v6 and v7

Stage IV includes: Any T, Any N, M1.  M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Metastatic Ovarian Clear Cell Adenocarcinoma

Ovarian clear cell adenocarcinoma that has spread from its original site of growth to another anatomic site.


Stage IIB Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IIB includes: T2b N0, M0. T2b: Extension and/or implants on other pelvic tissues. No malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


FIGO Stage IVA Ovarian Cancer

Ovarian cancer with pleural effusion with positive cytology. (FIGO, 2014)


Borderline Ovarian Mucinous Tumor

A low grade mucinous epithelial neoplasm arising from the ovary.  It is characterized by an atypical proliferation of mucinous-type epithelial cells without evidence of stromal invasion.  The mucinous epithelial cells may be of intestinal or endocervical type.


Recurrent Ovarian Transitional Cell Carcinoma

The reemergence of ovarian transitional cell carcinoma after a period of remission.


Stage IIIC Ovarian Cancer AJCC v8

Stage IIIC includes: T3c, N0/N1, M0. T3c: Ovarian cancer with macroscopic peritoneal metastasis beyond the pelvis more than 2 cm in greatest dimension with or without metastasis to the retroperitoneal lymph nodes (includes extension of tumor to capsule of liver and spleen without parenchymal involvement of either organ). N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Ovarian Mixed Cell Adenocarcinoma

An adenocarcinoma that arises from the ovary and is characterized by the presence of two or more adenocarcinoma components, most often endometrioid and clear cell.


Locally Advanced Ovarian Carcinoma

Ovarian carcinoma that has spread from its original site of growth to nearby tissues or lymph nodes.


Recurrent Ovarian Undifferentiated Carcinoma

The reemergence of ovarian undifferentiated carcinoma after a period of remission.


Ovarian Soft Tissue Neoplasm

A benign, intermediate, or malignant mesenchymal neoplasm of the ovary. Representative examples include leiomyoma, myxoma, and sarcoma.


ovarian stromal hyperthecosis

A non-neoplastic disorder that usually affects postmenopausal women. It is characterized by the leuteinization of ovarian stromal cells. The ovaries are bilaterally involved and enlarged. When it affects women in reproductive age, it causes virilization, high blood pressure, and increased insulin levels.


Metastatic Ovarian Carcinosarcoma

Ovarian carcinosarcoma that has spread from its original site of growth to another anatomic site.


Stage I Ovarian Germ Cell Tumor AJCC v6 and v7

Stage I includes: (T1, N0, M0). T1: Tumor limited to ovaries (one or both).  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


malignant sex cord stromal tumor of ovary

Malignant sex cord stromal tumor (SCST) of ovary is a rare ovarian cancer arising from granulosa, theca, sertoli and leydig cells or stromal fibroblasts, occurring at any age and presenting with abdominal or pelvic mass, and characterized (with the exception of fibroma) by the production of sex steroids resulting in manifestations of hormone excess, with a relatively favorable prognosis.


Stage IIIB Ovarian Cancer AJCC v8

Stage IIIB includes: T3b, N0/N1, M0. T3b: Ovarian cancer with macroscopic peritoneal metastasis beyond pelvis 2 cm or less in greatest dimension with or without metastasis to the retroperitoneal lymph nodes. N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Stage II Borderline Ovarian Surface Epithelial-Stromal Tumor

Stage II includes: T2, N0, M0.  T2: Tumor involves one or both ovaries with pelvic extension and/or implants.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Ovarian Mucinous Carcinoid Tumor

A rare carcinoid tumor that arises from the ovary and is characterized by the presence of glands that are lined by cells that contain intracytoplasmic mucin or resemble goblet cells.  Pools of mucin, containing glands, may also be present.  It may have an aggressive clinical course and it can metastasize to other anatomic sites.


ovarian Sertoli-Leydig cell tumor

A benign or malignant sex cord-stromal tumor arising from the ovary. It is characterized by the presence of neoplastic Leydig cells. Signs and symptoms include hirsutism, menorrhagia and metrorrhagia. It may be associated with trisomy 8.


Well Differentiated Ovarian Steroid Cell Tumor

An ovarian steroid cell tumor not otherwise specified, and characterized by the absence of nuclear atypia, mitotic figures, necrosis, and hemorrhage.


Refractory Ovarian Clear Cell Adenocarcinoma

Ovarian clear cell adenocarcinoma that is resistant to treatment.


Ovarian Wolffian Tumor

An epithelial neoplasm of Wolffian (mesonephric) origin arising from the ovarian hilum. Most tumors behave in a benign fashion.


Ovarian Stromal-Leydig Cell Tumor

A rare, benign and well circumscribed stromal tumor of the ovary.  It is characterized by the presence of a fibrotic stroma with clusters of Leydig cells.  The Leydig cells contain crystals of Reinke.  Patients may present with virilization.


Stage IIA Ovarian Cancer AJCC V6 and v7

Stage IIA includes: T2a, N0, M0.  T2a: Extension and/or implants on uterus and/or tube(s). No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


non-gestational ovarian choriocarcinoma

A malignant germ cell tumor that arises from the ovary and is composed of cytotrophoblasts, syncytiotrophoblasts, and extravillous trophoblasts. The prognosis is less favorable than gestational choriocarcinoma.


Stage IB Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IB includes: (T1b, N0, M0). T1b: Tumor limited to both ovaries; capsules intact, no tumor on ovarian surface.  No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


Borderline Ovarian Clear Cell Tumor/Atypical Proliferative Ovarian Clear Cell Tumor with Intraepithelial Carcinoma

A non-invasive clear cell adenofibromatous neoplasm that arises from the ovary. It is characterized by the presence of atypical neoplastic clear or hobnail epithelial cells and intraepithelial carcinoma.


FIGO Stage IIIA1(i) Ovarian Cancer

Ovarian cancer with positive retroperitoneal lymph nodes only. Metastasis equal or less than 10 mm. (FIGO, 2014)


malignant non-dysgerminomatous germ cell tumor of ovary

A malignant germ cell tumor other than dysgerminoma that arises from the ovary.


Malignant Ovarian Luteinized Thecoma

A thecoma of the ovary that contains lutein cells and may metastasize to other anatomic sites. It is usually characterized by nuclear atypia and mitotic activity.


ovarian angiosarcoma

A malignant vascular neoplasm arising from the ovary.


Stage II Ovarian Polyembryoma AJCC v6 and v7

Stage II includes: T2, N0, M0. T2: Tumor involves one or both ovaries with pelvic extension and/or implants. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Stage I Borderline Ovarian Surface Epithelial-Stromal Tumor

Stage I includes: T1, N0, M0. T1: Tumor limited to ovaries (one or both).  N0: No regional lymph node metastasis.  M0: No distant metastasis.  (AJCC 6th and 7th eds.)


Stage IIIA Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IIIA includes: T3a, N0, M0. T3a: Microscopic peritoneal metastasis beyond pelvis (no macroscopic tumor). N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Recurrent Ovarian Carcinosarcoma

The reemergence of ovarian carcinosarcoma after a period of remission.


Ovarian germ cell choriocarcinoma stage II


Recurrent BRCA- Associated Ovarian Carcinoma

The reemergence of BRCA-associated ovarian carcinoma after a period of remission.


ovarian endometriosis

A non-neoplastic disorder characterized by the growth of endometrial tissue in the ovaries. It results in the development of blood filled ovarian cysts (chocolate cysts), and creation of scars and adhesions.


Borderline Ovarian Serous Tumor/Atypical Proliferative Ovarian Serous Tumor

A non-invasive serous neoplasm that arises from the ovary and shows greater cellular proliferation and cytologic atypia as compared to benign ovarian serous tumors, but less as compared to low-grade ovarian serous carcinoma.


ovarian gynandroblastoma

A rare neoplasm arising from the ovary. Although it may occur at any age, it is more often seen in young females. Morphologically, it is characterized by a mixture of two cellular populations: well differentiated Sertoli cells and granulosa cells, with the latter constituting at least ten percent of the neoplasm. The vast majority of cases are stage I lesions at presentation and produce either estrogenic or androgenic manifestations. Although it may present as a massive ovarian tumor, it usually follows a benign clinical course. Very rare case reports of testicular lesions morphologically resembling gynandroblastomas are in fact variants of juvenile granulose cell tumor, or Sertoli cell tumor, or a combination of both.


Stage IIIB Ovarian Cancer AJCC v6 and v7

Stage IIIB includes: T3b, N0, M0.  T3b: Macroscopic peritoneal metastasis beyond pelvis 2 cm or less in greatest dimension. N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Refractory Extrarenal Rhabdoid Tumor of the Ovary

An extrarenal rhabdoid tumor of the ovary that is resistant to treatment.


Refractory Ovarian Squamous Cell Carcinoma

Ovarian squamous cell carcinoma that is resistant to treatment.


Benign epithelial tumor of ovary

A non-metastasizing tumor that originates from the surface epithelium of the ovary.  It is composed of epithelial cells and stroma.  Representative examples include serous cystadenoma, mucinous cystadenoma, clear cell adenofibroma, and benign Brenner tumor.


ovarian adenosarcoma

A biphasic neoplasm that arises from the ovary and is characterized by the presence of mullerian-type epithelial tissue in a mesenchymal sarcomatous stroma. The presence of a high grade sarcomatous component is associated with recurrences and metastases.


Stage IV Ovarian Polyembryoma AJCC v6 and v7

Stage IV includes: Any T, Any N, M1. M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Ovarian germ cell choriocarcinoma stage I

Stage I includes: T1, N0, M0. T1: Tumor limited to ovaries (one or both). N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Ovarian Smooth Muscle Tumor of Uncertain Malignant Potential

A smooth muscle neoplasm that arises from the ovary and cannot be reliably diagnosed as benign or malignant, because of the presence of ambiguous morphologic findings.


Poorly Differentiated Ovarian Sertoli-Leydig Cell Tumor

A Sertoli-Leydig tumor of the ovary characterized by the presence of a sarcomatoid stroma which contains primitive gonadal stromal cells. It may behave in a malignant fashion and metastasize to other anatomic sites.


Malignant Ovarian Thecoma

A thecoma of the ovary which may metastasize to another anatomic site. It is usually characterized by nuclear atypia and mitotic activity. Malignant thecomas are rare.


Ovarian Mucinous Cystic Tumor Associated with Pseudomyxoma Peritonei

The presence of abundant mucoid or gelatinous, cellular or acellular material in the pelvis and abdominal cavity (pseudomyxoma peritonei) that is associated with the presence of an ovarian mucinous cystic tumor.  In the vast majority of cases, the presence of pseudomyxoma peritonei is the result of metastasis from a primary appendiceal or gastrointestinal tumor site, and the ovarian mucinous tumor is metastatic rather than primary.


Ovarian Cancer by AJCC v8 Stage

A term that refers to the staging of ovarian cancer according to the American Joint Committee on Cancer, 8th edition. This staging system applies to ovarian carcinomas. Nonepithelial primary ovarian cancers may be staged using this classification but should be reported separately. (from AJCC 8th Ed.)


Ovarian Signet Ring Stromal Tumor

A rare, benign sex cord-stromal tumor that arises from the ovary. It is characterized by the presence of round cells with a single cytoplasmic vacuole and an eccentric nucleus resembling signet ring cells. Mucin stains are negative.


Stage I Ovarian Dysgerminoma AJCC v6 and v7

Stage I includes: (T1, N0, M0). T1: Tumor limited to ovaries (one or both).  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


Recurrent Ovarian Adenocarcinoma

The reemergence of ovarian adenocarcinoma after a period of remission.


Ovarian Seromucinous Cystadenoma

A non-metastasizing cystic mixed epithelial neoplasm that arises from the ovary. It is characterized by the presence of more than one epithelial cell type, most often serous and endocervical-type mucinous.


Ovarian Smooth Muscle Neoplasm

A benign, intermediate, or malignant neoplasm that arises from the ovary and is composed of neoplastic cells with smooth muscle differentiation.


Ovarian Low Grade Endometrioid Stromal Sarcoma

A rare invasive mesenchymal tumor that arises from the ovary.  It is characterized by the absence of marked pleomorphism and nuclear atypia in the neoplastic mesenchymal cells.  It may have a favorable clinical outcome.


Ovarian Sertoli Cell Tumor with Lipid Storage

A Sertoli cell tumor that arises from the ovary and is characterized by the presence of cells that are distended by the presence of intracytoplasmic lipid.


pediatric ovarian germ cell tumor

A germ cell tumor that arises from the ovary and occurs in children.


Ovarian Mesonephric-Like Adenocarcinoma

An exceedingly rare adenocarcinoma that arises from the ovary and displays mesonephric differentiation. Some tumors are thought to derive from mesonephric duct (Wolffian duct) remnants. Others may have a Mullerian duct lineage.


Recurrent Malignant Ovarian Granulosa Cell Tumor

The reemergence of malignant ovarian granulosa cell tumor after a period of remission.


Refractory Ovarian Transitional Cell Carcinoma

Ovarian transitional cell carcinoma that is resistant to treatment.


Benign Ovarian Seromucinous Tumor

A non-metastasizing mixed epithelial neoplasm that arises from the ovary. It is characterized by the presence of more than one epithelial cell type, most often serous and endocervical-type mucinous. This category includes seromucinous cystadenoma and seromucinous adenofibroma.


Ovarian Carcinoid Tumor

A well differentiated neuroendocrine neoplasm that arises from the ovary.  Histologically, it is classified as insular, trabecular, mucinous, or stromal carcinoid.  Clinical manifestations of carcinoid syndrome occur in approximately thirty percent of patients with insular carcinoid tumor.  Carcinoid syndrome is rare in other types of primary ovarian carcinoid tumor.  With the exception of mucinous carcinoid tumor, the prognosis is favorable.  Primary ovarian mucinous carcinoid tumor has a more aggressive clinical course and it can metastasize to other anatomic sites.


Borderline Ovarian Endometrioid Adenofibroma

An epithelial neoplasm that arises from the ovary characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells. The surrounding ovarian stroma is fibrotic. There is no evidence of stromal invasion.


Stage IIA Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IIA includes: T2a, N0, M0. T2a: Extension and/or implants on uterus and/or tube(s). No malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


FIGO Stage IC1 Ovarian Cancer

Stage IC ovarian cancer with surgical spill. (FIGO, 2014)


ovarian primitive germ cell tumor

A malignant tumor that arises from the ovary and is characterized by the presence of malignant germ cell components but lacks a teratoma component.


Ovarian Cancer by FIGO Stage

A category of staging terms for ovarian cancer according to the International Federation of Gynecology and Obstetrics (FIGO), 2014. AJCC ovarian cancer stage terms from the 6th and 7th editions that are synonymous to the FIGO ovarian cancer staging classification of 2014 are included as preferred terms.


Metastatic Ovarian Endometrioid Adenocarcinoma

Ovarian endometrioid adenocarcinoma that has spread from its original site of growth to another anatomic site.


Platinum-Refractory Ovarian Carcinoma

Ovarian carcinoma that progresses during platinum therapy or within one month of completing the last platinum therapy.


liposarcoma of the ovary

A malignant adipose tissue neoplasm of the ovary.


Borderline Ovarian Seromucinous Tumor/Atypical Proliferative Ovarian Seromucinous Tumor with Microinvasion

A low grade ovarian epithelial neoplasm characterized by the presence of atypical neoplastic serous and mucinous cells. Microinvasion of the ovarian stroma is present.


Benign germ cell tumor of ovary

A non-metastasizing germ cell tumor that arises from the ovary.  The vast majority of cases are benign dermoid cysts.


Ovarian Sertoli Cell Tumor

A rare, typically benign ovarian neoplasm composed of Sertoli cells. Patients may present with pseudoprecocity, menometrorrhagia, amenorrhea, hirsutism, and hoarseness.  Rarely it may invade the ovarian stroma and extend beyond the ovary.


FIGO Stage IIIC Ovarian Cancer

Ovarian cancer with macroscopic, extrapelvic, peritoneal metastasis greater than 2 cm +/- positive retroperitoneal lymph nodes. Includes extension to capsule of liver/spleen. (FIGO, 2014)


childhood choriocarcinoma of the ovary

A non-gestational choriocarcinoma that arises from the ovary and occurs in children.


Metastatic Ovarian Small Cell Carcinoma, Hypercalcemic Type

A primary small cell carcinoma of the ovary that is associated with hypercalcemia and has metastasized to other anatomic sites.


Borderline Ovarian Endometrioid Tumor/Atypical Proliferative Ovarian Endometrioid Tumor

An epithelial neoplasm that arises from the ovary characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells. The surrounding ovarian stroma is often fibrotic. There is no evidence of stromal invasion.


Borderline Ovarian Serous Tumor/Atypical Proliferative Ovarian Serous Tumor with Microinvasion

A low grade ovarian epithelial neoplasm characterized by the presence of neoplastic serous epithelial cells, atypia, and microinvasion of the ovarian stroma.


Ovarian Cellular Fibroma

A benign neoplasm arising from soft tissue of the ovary. It is characterized by the presence of spindle-shaped fibroblasts and increased cellularity.


Borderline Ovarian Seromucinous Tumor/Atypical Proliferative Ovarian Seromucinous Tumor

A low grade, non-invasive ovarian epithelial neoplasm characterized by the presence of atypical neoplastic serous and mucinous cells.


Benign Ovarian Serous Tumor

A non-metastasizing neoplasm that arises from the ovary and is characterized by the presence of neoplastic epithelium that resembles the epithelium of the fallopian tube.  It includes serous cystadenoma, serous adenofibroma, serous cystadenofibroma, and surface papilloma.


Moderately Differentiated Ovarian Sertoli-Leydig Cell Tumor

A Sertoli-Leydig cell tumor of the ovary characterized by the presence of spindle-shaped gonadal stromal cells and Sertoli cells, some of which are atypical. Leydig cells are also present forming clusters at the periphery of the cellular aggregates. Metastases have been reported in a minority of patients.


Recurrent Borderline Ovarian Surface Epithelial-Stromal Tumor

The reemergence of borderline ovarian epithelial tumor after a period of remission.


Ovarian Adenomatoid Tumor

A rare benign mesothelial tumor that arises from the ovary. It is characterized by the presence of gland-like structures.


Ovarian Sex Cord-Stromal Tumor Associated with Peutz-Jeghers Syndrome

A sex cord-stromal tumor that arises from the ovary in a patient diagnosed with Peutz-Jeghers syndrome.


Stage III Ovarian Polyembryoma AJCC v6 and v7

Stage III includes: T3, N0, M0. T3: Tumor involves one or both both ovaries with microscopically confirmed peritoneal metastasis outside pelvis. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Juvenile Bilateral Ovarian Granulosa Cell Tumor

A granulosa cell tumor that involves both ovaries. It affects females in the first three decades of life.


Refractory Ovarian Adenocarcinoma

Ovarian adenocarcinoma that is resistant to treatment.


Stage III Ovarian Dysgerminoma AJCC v6 and v7


Ovarian Fibromatosis and Massive Edema

A rare benign lesion characterized by tumor-like enlargement of the ovaries due to fibroblastic proliferation with collagen deposition (fibromatosis) or stromal accumulation of edema fluid (massive edema). It presents in premenopausal patients, with menstrual abnormalities, abdominal pain, or androgenic manifestations. Most cases are unilateral. (WHO 2020)


luteoma of pregnancy

A non-neoplastic and self-limited condition that occurs during pregnancy. It is characterized by proliferation of luteinized stromal cells that replace the normal ovarian stromal cells. It is usually manifested with bilateral multinodular ovarian masses. Treatment is not required.


Ovarian Sertoli-Leydig Cell Tumor with Heterologous Elements

A Sertoli-Leydig cell tumor that arises from the ovary. It is characterized by the presence of epithelial and/or mesenchymal components and neoplasms that arise from these components.


Microsatellite Stable Ovarian Carcinoma

Ovarian carcinoma characterized by the absence of microsatellite instability.


Ovarian Trabecular Carcinoid Tumor

A carcinoid tumor that arises from the ovary and is characterized by the presence of columnar cells with abundant cytoplasm forming ribbons.  The prognosis is excellent.


Mucinous adenofibroma of borderline malignancy

A low malignant potential adenofibroma of the ovary It is characterized by an atypical epithelial hyperplasia. The epithelial cells contain intracytoplasmic mucin. There is no evidence of stromal destructive invasion.


Stage IC Ovarian Cancer AJCC v6 and v7

Stage IC includes: T1c, N0, M0. T1c: Tumor limited to one or both ovaries with any of the following: capsule ruptured, tumor on ovarian surface, malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Refractory Malignant Ovarian Brenner Tumor

Malignant ovarian Brenner tumor that is resistant to treatment.


Stage IIB Ovarian Cancer AJCC v6 and v7

Stage IIB includes: T2b N0, M0.  T2b: Extension and/or implants on other pelvic tissues.  No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


ovarian granulosa cell tumor

A granulosa-stromal cell tumor that arises from the ovary. It is characterized by the presence of granulosa cells that comprise at least ten percent of the cellular population. The granulosa cells are often found in a background that contains theca and fibrous cells. There are two major subtypes recognized, adult and juvenile granulosa cell tumor. Clinically, patients may present with an abdominal mass. Symptoms depend on the patient's age. The most important indicator of prognosis is tumor stage. Age over forty years at the time of the initial diagnosis, large tumor size, bilaterality, cellular atypia, and increased mitotic activity are factors indicating a potentially aggressive clinical course and relative poor prognosis.


Clear cell adenofibroma of borderline malignancy

An epithelial neoplasm with low malignant potential affecting the ovary. It is characterized by the presence of atypical glands and/or cystic spaces lined with clear or hobnail cells.


Stage IB Ovarian Cancer AJCC v6 and v7

Stage IB includes: T1b, N0, M0. T1b: Tumor limited to both ovaries; capsules intact, no tumor on ovarian surface.  No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Borderline Ovarian Serous Cystadenofibroma

A neoplasm of low malignant potential arising from the ovary. It is characterized by the presence of cystic spaces which are lined by atypical serous epithelial cells. The surrounding ovarian stroma is fibrotic. There is no evidence of stromal invasion.


Hilus cell tumor

A benign Leydig cell tumor which arises in the hilar area of the ovary.


Benign Brenner Tumor

A benign neoplasm that arises from the ovary and is composed of nests of transitional cells in a fibrotic stroma. There is no evidence of invasion.


Platinum-Sensitive Ovarian Carcinoma

Ovarian carcinoma that has a documented response to platinum-based chemotherapy.


Unresectable Ovarian Carcinoma

Ovarian carcinoma that is not amenable to surgical resection.


Borderline Ovarian Clear Cell Cystadenofibroma

An epithelial neoplasm with low malignant potential affecting the ovary. It is characterized by the presence of prominent cystic spaces lined with atypical clear or hobnail cells. There is no evidence of stromal invasion.


ovarian Wilms tumor

An embryonal neoplasm arising from the ovary with morphologic features resembling Wilms tumor of the kidney. It occurs during the reproductive age and may present as a rapidly growing adnexal mass.


Recurrent Ovarian Cystadenocarcinoma

The reemergence of ovarian cystadenocarcinoma after a period of remission.


Stage II Ovarian Yolk Sac Tumor AJCC v6 and v7

Stage II includes: T2, N0, M0. T2: Tumor involves one or both ovaries with pelvic extension and/or implants. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Borderline Ovarian Serous Adenofibroma

A low malignant potential adenofibroma arising from the ovary. It is characterized by an atypical epithelial hyperplasia. The epithelial cells are of serous type. There is no evidence of stromal destructive invasion.


Stage IA Ovarian Cancer AJCC v8

Stage IA includes: T1a, N0, M0. T1a: Ovarian cancer with tumor limited to one ovary (capsule intact); no malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Childhood Malignant Ovarian Germ Cell Tumor

A malignant germ cell tumor in children arising from the ovary.  It includes the dysgerminoma, yolk sac tumor, choriocarcinoma, embryonal carcinoma and immature teratoma.


Borderline Ovarian Clear Cell Tumor

An epithelial neoplasm with low malignant potential affecting the ovary.  It is characterized by the presence of clear or hobnail cells.  In some cases, the cells may display nuclear atypia and prominent nucleoli.  When such cells are present, they remain confined to the glands.  There is no evidence of stromal invasion.


Congenital Ovarian Failure

Ovarian failure, the cause of which is present at birth.


Stage I Ovarian Cancer AJCC v8

Stage I includes: T1, N0, M0. T1: Ovarian cancer with tumor limited to ovaries (one or both). N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Stage IIIA Ovarian Cancer AJCC v8

Stage IIIA includes: IIIA1: T1/2, N1, M0; IIIA2: T3a, N0/N1, M0. T1: Ovarian cancer with tumor limited to ovaries (one or both). T2: Ovarian cancer with tumor involving one or both ovaries with pelvic extension below pelvic brim. T3a: Ovarian cancer with microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes. N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Ovarian Stromal Tumor with Minor Sex Cord Elements

A rare, benign sex cord-stromal tumor of the ovary characterized by the presence of a fibrothecomatous stroma and scattered sex cord elements. Although it is usually hormonally inactive, cases associated with endometrial hyperplasia or adenocarcinoma have been reported.


Sertoli-Leydig cell tumor, retiform

A Sertoli-Leydig cell tumor characterized by the presence of spaces that resemble rete testis (retiform elements).  These spaces form anastomosing patterns and comprise at least ten percent but less than ninety percent of the tumor.  When the retiform elements comprise ninety percent or more of the tumor, the term retiform Sertoli-Leydig cell tumor is used.  A minority of patients may have an aggressive clinical course.


Childhood Ovarian Nongerminomatous Germ Cell Tumor

A nongerminomatous germ cell tumor that arises in the ovary and occurs in children.


Ovarian Mixed Germ Cell-Sex Cord-Stromal Tumor

A neoplasm that arises from the ovary and is characterized by the presence of germ cell and sex cord-stromal tissues that are intimately admixed.  If there is no malignant germ cell component present, the clinical course is benign.


Malignant Ovarian Steroid Cell Tumor

A steroid tumor of the ovary which has an aggressive clinical course and metastasizes to other anatomic sites. It is usually of large size and is characterized by nuclear atypia, increased mitotic activity, hemorrhage, and necrosis. Sometimes, patients have abdominal metastases at presentation.


Ovarian Insular Carcinoid Tumor

A carcinoid tumor that arises from the ovary and is characterized by the presence of round cells with abundant eosinophilic cytoplasm forming cribriform patterns.  Clinical manifestations of carcinoid syndrome occur in approximately thirty percent of patients.  The prognosis is favorable.


Stage IV Borderline Ovarian Surface Epithelial-Stromal Tumor

Stage IV includes: Any T, Any N, M1.  M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Ovarian Mixed Germ Cell-Sex Cord-Stromal Tumor, Unclassified

An ovarian mixed germ cell-sex cord-stromal tumor in which the neoplastic cellular infiltrate does not have the distinctive appearance of a gonadoblastoma.


Unresectable Ovarian Endometrioid Adenocarcinoma

Ovarian endometrioid adenocarcinoma that is not amenable to surgical resection.


ovarian neuroendocrine neoplasm

An epithelial neoplasm with neuroendocrine differentiation that arises from the ovary. It includes carcinoid tumor, small cell carcinoma pulmonary type, and large cell neuroendocrine carcinoma.


Ovarian Leiomyoma

A benign smooth muscle neoplasm arising from the ovary. It is usually characterized by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles, and a whorled pattern. Variants with increased cellularity, increased mitotic activity, myxoid changes, or epithelioid morphology have also been reported.


ovarian benign neoplasm

A non-metastasizing neoplasm that arises from the ovary. Representative examples include serous cystadenoma, mucinous cystadenoma, clear cell adenofibroma, benign Brenner tumor, thecoma, and fibroma.


Refractory Ovarian Mucinous Adenocarcinoma

Ovarian mucinous adenocarcinoma that is resistant to treatment.


Ovarian Torsion

Twisting of the ovary resulting in the cutoff of the blood supply to the ovary. It may develop in an enlarged or normal ovary and in the vast majority of cases is unilateral. Signs and symptoms include acute lower abdominal pain, nausea, vomiting, and fever.


Ovarian Signet Ring Cell Carcinoma

An extremely rare adenocarcinoma that arises from the ovary. It is characterized by the presence of signet ring malignant epithelial cells.


Ovarian Leydig Cell Tumor

An ovarian Leydig cell tumor for which the site of origin (ovarian hilus or ovarian stroma) cannot be determined.


Recurrent Ovarian Seromucinous Carcinoma

The reemergence of ovarian seromucinous carcinoma after a period of remission.


Stage IIC Ovarian Carcinoma

Stage IIC includes: T2c, N0, M0.  T2c: Pelvic extension and/or implants (T2a or T2b) with malignant cells in ascites or peritoneal washing.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Recurrent Platinum-Resistant Ovarian Carcinoma

The reemergence of platinum-resistant ovarian carcinoma after a period of remission.


Recurrent Ovarian Germ Cell Tumor

The reemergence of ovarian germ cell tumor after a period of remission.


Stage IA Ovarian Cancer

Stage IA includes: T1a, N0, M0.  T1a: Tumor limited to one ovary; capsule intact, no tumor on ovarian surface.  No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Borderline Ovarian Endometrioid Tumor/Atypical Proliferative Ovarian Endometrioid Tumor with Microinvasion

A low grade ovarian epithelial neoplasm characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells. Microinvasion of the ovarian stroma is present.


Ovarian Cancer by AJCC v6 and v7 Stage

A category of staging terms for ovarian cancer according to the American Joint Committee on cancer (AJCC) 6th and 7th editions. International Federation of Gynecology and Obstetrics (FIGO) ovarian cancer staging terms prior to 2014 are included in this category if synonymous with the AJCC terms.


Stage II Ovarian Dysgerminoma AJCC v6 and v7

Stage II includes: T2, N0, M0. T2: Tumor involves one or both ovaries with pelvic extension and/or implants. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Refractory Ovarian Undifferentiated Carcinoma

Ovarian undifferentiated carcinoma that is resistant to treatment.


Metastatic Ovarian Undifferentiated Carcinoma

Ovarian undifferentiated carcinoma that has spread from its original site of growth to another anatomic site.


Recurrent Ovarian Endometrioid Adenocarcinoma

The reemergence of ovarian endometrioid adenocarcinoma after a period of remission.


Stage IV Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IV includes: Any T, Any N, M1. M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


ovarian germ cell tumor

A neoplasm that arises from the ovary and originates from germ cells. Representative examples include teratoma, embryonal carcinoma, yolk sac tumor, and dysgerminoma.


Ovarian stromal hyperplasia

A non-neoplastic disorder that usually affects postmenopausal women.  It is characterized by proliferation of ovarian stromal cells without evidence of atypia.  There is usually bilateral ovarian involvement.  The ovaries may or may not be enlarged.


FIGO Stage IC2 Ovarian Cancer

Stage IC ovarian cancer with capsule rupture before surgery or tumor on ovarian surface. (FIGO, 2014)


ovary leiomyosarcoma

An aggressive malignant smooth muscle neoplasm, arising from the ovary. It is characterized by a proliferation of neoplastic spindle cells.


Lipid cell tumor of ovary

An ovarian tumor in which the vast majority of the cells (more than 90% of the tumor cells) resemble steroid hormone-secreting cells. It usually presents with androgenic manifestations. Approximately one-third of the cases follow a malignant clinical course.


Metastatic Microsatellite Stable Ovarian Carcinoma

Microsatellite stable ovarian carcinoma that has spread from its original site of growth to another anatomic site.


Borderline Ovarian Endometrioid Tumor

A rare, low grade ovarian epithelial neoplasm characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells.


FIGO Stage IC3 Ovarian Cancer

Stage IC ovarian cancer with malignant cells in the ascites or peritoneal washings. (FIGO, 2014)


Stage IV Ovarian Dysgerminoma AJCC v6 and v7


Stage IC Ovarian Cancer AJCC v8

Stage IC includes: T1c, N0, M0. T1c: Ovarian cancer with tumor limited to one or both ovaries, with any of the following: surgical spill, capsule ruptured before surgery or tumor on ovarian surface, or malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Ovarian Sclerosing Stromal Tumor

A benign ovarian stromal tumor characterized by the presence of cellular areas which contain fibroblasts and round cells. The cellular areas are separated by sclerotic or edematous hypocellular tissue. Symptoms include abdominal discomfort and menstrual abnormalities.


Stage IA Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IA includes: (T1a, N0, M0). T1a: Tumor limited to one ovary; capsule intact, no tumor on ovarian surface.  No malignant cells in ascites or peritoneal washings.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


Metastatic Platinum-Resistant Ovarian Carcinoma

Platinum-resistant ovarian carcinoma that has spread from its original site of growth to another anatomic site.


FIGO Stage IVB Ovarian Cancer

Ovarian cancer with hepatic and/or splenic parenchymal metastasis, metastasis to extra-abdominal organs (including inguinal lymph nodes and lymph nodes outside of the abdominal cavity). (FIGO, 2014)


Benign Ovarian Clear Cell Tumor

A non-metastasizing neoplasm that arises from the ovary.  It is characterized by a predominance of clear and hobnail benign epithelial cells.


Recurrent Ovarian Clear Cell Adenocarcinoma

The reemergence of ovarian clear cell adenocarcinoma after a period of remission.


Metastatic Ovarian Mucinous Adenocarcinoma

Ovarian mucinous adenocarcinoma that has spread from its original site of growth to another anatomic site.


Ovarian Steroid Cell Tumor, Not Otherwise Specified

A steroid cell tumor that arises from the ovary and is defined by morphologic features that do not fit into the categories of Leydig cell tumor and stromal luteoma.  These features include solid proliferations of polygonal neoplastic cells with eosinophilic and granular cytoplasm.  Grossly, these tumors usually present as large and well circumscribed masses and are usually associated with androgenic manifestations.  Approximately one third of the cases have a malignant clinical course.


Stage IB Ovarian Cancer AJCC v8

Stage IB includes: T1b, N0, M0. T1b: Ovarian cancer with tumor limited to one or both ovaries (capsules intact); no tumor on ovarian surface; no malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Refractory Ovarian Carcinoma

Ovarian carcinoma that is resistant to treatment.


Stage I Ovarian Polyembryoma AJCC v6 and v7

Stage I includes: (T1, N0, M0). T1: Tumor limited to ovaries (one or both).  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


Ovarian Granulosa-Stromal Cell Tumor

A group of sex cord-stromal tumors that arise from the ovary.  These tumors are characterized by the presence of granulosa cells, stromal cells, and/or theca cells.  This group includes granulosa cell tumor and tumors of the thecoma/fibroma group.


ovarian melanoma

A melanoma (disease) that involves the ovary.


Refractory Ovarian Endometrioid Adenocarcinoma

Ovarian endometrioid adenocarcinoma that is resistant to treatment.


Ovarian Neuroectodermal-Type Tumor

A rare ovarian malignant tumor with neuroectodermal differentiation. It is characterized either by a small round cell proliferation or by neuronal or glial differentiation.


Sertoli-Leydig cell tumor, intermediate differentiation, with heterologous elements

An ovarian Sertoli-Leydig cell tumor of intermediate differentiation, characterized by the presence of a heterologous component, usually consisting of cartilage, skeletal muscle, or rhabdomyosarcoma.


malignant germ cell tumor of ovary

Malignant germ cell tumor of ovary is a rare ovarian cancer arising from germ cells in the ovary, frequently unilateral at diagnosis which characteristically presents during adolescence with pelvic mass, fever, vaginal bleeding and acute abdomen.


Borderline Ovarian Serous Tumor-Micropapillary Variant/Non-Invasive Low Grade Ovarian Serous Carcinoma

A non-invasive serous neoplasm that arises from the ovary and shows micropapillary and/or cribriform architectural patterns.  It is composed of round epithelial cells with scant cytoplasm and moderate nuclear atypia.


Stage IV Ovarian Yolk Sac Tumor AJCC v6 and v7

Stage IV includes: Any T, Any N, M1. M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Poorly Differentiated Ovarian Sertoli-Leydig Cell Tumor, Variant with Heterologous Elements

An ovarian poorly differentiated Sertoli-Leydig cell tumor. It is characterized by the presence of a heterologous component, usually consisting of cartilage, skeletal muscle, or rhabdomyosarcoma.


Well Differentiated Ovarian Sertoli-Leydig Cell Tumor

A Sertoli-Leydig tumor of the ovary characterized by the presence of Sertoli cells in tubules without evidence of significant nuclear atypia or mitotic activity. Primitive gonadal stromal cells are not present. It usually follows a benign clinical course.


ovarian endometrioid adenofibroma

A benign neoplasm of the ovary characterized by the presence of glandular structures with endometrial-type well-differentiated cells in a fibrotic stroma.


Stage IIIA2 Ovarian Cancer AJCC v8

Stage IIIA2 includes: T3a, N0/N1, M0. T3a: Ovarian cancer with microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes. N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Stage I Ovarian Yolk Sac Tumor AJCC v6 and v7


Ovarian Retiform Sertoli-Leydig Cell Tumor, Variant with Heterologous Elements

A retiform Sertoli-Leydig cell tumor that arises from the ovary. It is characterized by the presence of an epithelial and/or mesenchymal heterologous component.


undifferentiated sarcoma of ovary

An aggressive high grade sarcoma that arises from the ovary.  It is characterized by the presence of marked pleomorphism and nuclear atypia in the neoplastic mesenchymal cells.  The prognosis is poor.


Stage IIIA1 Ovarian Cancer AJCC v8

Stage IIIA1 includes: T1/2, N1, M0. T1: Ovarian cancer with tumor limited to ovaries (one or both). T2: Ovarian cancer with tumor involving one or both ovaries with pelvic extension below pelvic brim. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Stage IIC Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IIC includes: T2c, N0, M0. T2c: Pelvic extension and/or implants (T2a or T2b) with malignant cells in ascites or peritoneal washing. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Ovarian Leydig Cell Tumor, Non-Hilar Type

A Leydig cell tumor that arises from the ovarian stroma.


Benign thecoma

A thecoma of the ovary that does not metastasize to other anatomic sites.


Borderline Ovarian Mucinous Tumor, Intestinal Type

A neoplasm of low malignant potential arising from the ovary.  It is characterized by the proliferation of neoplastic mucinous epithelial cells that resemble intestinal epithelial cells.  There is no evidence of stromal invasion.


ovarian sarcoma

A rare, aggressive malignant mesenchymal neoplasm that arises from the ovary. The prognosis is poor.


FIGO Stage III Ovarian Cancer

Ovarian cancer involving 1 or both ovaries with cytologically or histologically confirmed spread to the peritoneum outside the pelvis and/or metastasis to the retroperitoneal lymph nodes. (FIGO, 2014)


FIGO Stage II Ovarian Cancer

Ovarian cancer involving one or both ovaries with pelvic extension (below the pelvic brim) or primary peritoneal cancer. (FIGO, 2014)


Stage I Ovarian Embryonal Carcinoma AJCC v6 and v7

Stage I includes: (T1, N0, M0). T1: Tumor limited to ovaries (one or both).  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th Eds.)


Advanced Ovarian Carcinosarcoma

Ovarian carcinosarcoma that has spread extensively to other anatomic sites or is no longer responding to treatment.


Recurrent Extrarenal Rhabdoid Tumor of the Ovary

The reemergence of extrarenal rhabdoid tumor of the ovary after a period of remission.


Extrarenal Rhabdoid Tumor of the Ovary

An extrarenal rhabdoid tumor affecting the ovary.


Stage III Ovarian Embryonal Carcinoma AJCC v6 and v7

Stage III includes: T3, N0, M0. T3: Tumor involves one or both both ovaries with microscopically confirmed peritoneal metastasis outside pelvis. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


adenocarcinofibroma

A carcinoma arising from the ovary. It is characterized by the presence of malignant epithelial cells in a fibrotic stroma. Histologic variants include clear cell, serous, mucinous, and endometrioid adenocarcinofibroma.


Stage III Borderline Ovarian Surface Epithelial-Stromal Tumor

Stage III includes: T3, N0, M0.  T3: Tumor involves one or both ovaries with microscopically confirmed peritoneal metastasis outside pelvis.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)


Adult Type Ovarian Granulosa Cell Tumor

A granulosa cell tumor that affects middle aged or postmenopausal women.  Patients may present with uterine bleeding.


Stage II Ovarian Germ Cell Tumor AJCC v6 and v7

Stage II includes: T2, N0, M0. T2: Tumor involves one or both ovaries with pelvic extension and/or implants. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Recurrent Ovarian Mucinous Adenocarcinoma

The reemergence of ovarian mucinous adenocarcinoma after a period of remission.


Acquired Ovarian Failure

Ovarian failure, the cause of which is not present at birth.


serous adenocarcinofibroma of ovary

A malignant neoplasm of the ovary with an invasive epithelial component and a fibrotic stroma. The epithelial component is characterized by the presence of malignant epithelial cells of serous type, forming glandular, papillary, and solid patterns.


Stage IV Ovarian Carcinoma

A carcinoma that arises from the ovary and has metastasized to another anatomic site.


Ovarian Non-Neoplastic Disorder

A non-neoplastic disorder that affects the ovary.  Representative examples include endometriosis and polycystic ovarian disease.


Borderline Ovarian Mucinous Tumor, Endocervical-Like

A neoplasm of low malignant potential arising from the ovary.  It is characterized by the proliferation of neoplastic epithelial cells that resemble endocervical epithelial cells.  There is no evidence of stromal invasion.


Gonadotropin-Resistant Ovary Syndrome

Ovarian dysfunction due to a defect at the receptor or post receptor level, or due to the presence of antibodies against gonadotropin receptors, resulting in deficient gonadotropin signaling that causes elevated concentrations of follicle stimulating hormone and/or luteinizing hormone. A distinguishing feature is the presence of normal numbers of ova.


Borderline Ovarian Seromucinous Tumor

A low grade ovarian epithelial neoplasm characterized by the presence of atypical neoplastic serous and mucinous cells.


BRCA-Associated Ovarian Carcinoma

Ovarian carcinoma caused by deleterious germline mutation in a gene of the BRCA family.


Solid Pseudopapillary Neoplasm of the Ovary

An exceedingly rare solid pseudopapillary tumor that occurs in ectopic pancreatic tissue in the ovary.


Thecoma, luteinized

A variant of ovarian thecoma characterized by the presence of lutein cells. It is associated with a lower frequency of estrogenic manifestations compared to typical thecomas. In a minority of cases androgenic manifestations are present.


Ovarian Tumor of the Thecoma/Fibroma Group

A group of neoplasms that arise from the ovary and represent a spectrum of tumors ranging from neoplasms that are composed entirely of fibroblasts to those that are composed predominantly of theca cells.


Ovarian Luteinized Thecoma Associated with Sclerosing Peritonitis

A rare usually bilateral luteinized thecoma that arises from the ovary and is associated with sclerosing peritonitis. It occurs mostly in premenopausal women. The ovarian tumor is benign but patients may develop intestinal obstruction due to the sclerosing peritonitis.


Ovarian germ cell choriocarcinoma stage III

Stage III includes: T3, N0, M0. T3: Tumor involves one or both both ovaries with microscopically confirmed peritoneal metastasis outside pelvis. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Stage IIA Ovarian Cancer AJCC v8

Stage IIA includes: T2a, N0, M0. T2a: Ovarian cancer with tumor extension and/or implants on the uterus and/or fallopian tube(s) and/or ovaries. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Unresectable Ovarian Undifferentiated Carcinoma

Ovarian undifferentiated carcinoma that is not amenable to surgical resection.


FIGO Stage IIIA1 Ovarian Cancer

Ovarian cancer with positive retroperitoneal lymph nodes only. (FIGO, 2014)


Platinum-Resistant Ovarian Carcinoma

Ovarian carcinoma that progresses between one and six months of completing the last platinum therapy.


Stage IIIA Ovarian Carcinoma

Ovarian cancer with positive retroperitoneal lymph nodes and/or microscopic metastasis beyond the pelvis. (FIGO, 2014)


Stage III Ovarian Yolk Sac Tumor AJCC v6 and v7


FIGO Stage IIIA1(ii) Ovarian Cancer

Ovarian cancer with positive retroperitoneal lymph nodes only. Metastasis greater than 10 mm. (FIGO, 2014)


Refractory Ovarian Seromucinous Carcinoma

Ovarian seromucinous carcinoma that is resistant to treatment.


ovarian sertoli-stromal cell tumor

A sex cord-stromal tumor that arises from the ovary and is composed entirely of, or in various combinations of, Sertoli cells, Leydig cells, and fibroblast-like cells.


Stage II Ovarian Cancer AJCC v8

Stage II includes: T2, N0, M0. T2: Ovarian cancer with tumor involving one or both ovaries with pelvic extension below pelvic brim. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Benign Ovarian Luteinized Thecoma

A non-metastasizing thecoma of the ovary that is characterized by the presence of lutein cells.


ovarian malignant mesothelioma

A rare malignant mesothelial neoplasm that usually involves both the ovarian surface and the ovarian stroma. In most cases there is bilateral ovarian involvement.


Ovarian Seromucinous Adenofibroma

A non-metastasizing mixed epithelial neoplasm that arises from the ovary. It is characterized by the presence of more than one epithelial cell type, most often serous and endocervical-type mucinous and prominent fibrous stroma..


benign endometrioid tumor of ovary

A non-metastasizing neoplasm that arises from the ovary characterized by the presence of glands or cysts lined by benign endometrial-type cells.  It includes endometrioid adenofibroma, endometrioid cystadenofibroma, and endometrioid cystadenoma.


Stage IIIC Ovarian Germ Cell Tumor AJCC v6 and v7

Stage IIIC includes: (T3c, N0, M0); (Any T, N1, M0). T3c: Peritoneal metastasis beyond pelvis more than 2cm in greatest dimension and/or regional lymph node metastasis. N0: No regional lymph node metastasis. N1: Regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Proliferating Brenner Tumor

A transitional cell neoplasm of low malignant potential arising from the ovary.  It is characterized by the presence of neoplastic transitional cells with atypical features without evidence of stromal invasion.


Typical Ovarian Thecoma

An ovarian thecoma characterized by the presence of cells with uniform nuclei and abundant vacuolated cytoplasm.  Mitoses are not present or, when present, are rare.


Borderline Ovarian Mucinous Tumor/Atypical Proliferative Ovarian Mucinous Tumor with Intraepithelial Carcinoma

A low grade ovarian epithelial neoplasm characterized by the presence of neoplastic mucinous epithelial cells, atypia, and the presence of intraepithelial carcinoma.


Unresectable Ovarian Mucinous Adenocarcinoma

Ovarian mucinous adenocarcinoma that is not amenable to surgical resection.


choriocarcinoma of ovary

A choriocarcinoma arising from the ovary. When it appears before puberty is of germ cell origin. In children and young adults signs and symptoms include precocious pseudopuberty and vaginal bleeding. Serum human chorionic gonadotropin is elevated. Germ cell derived ovarian choriocarcinoma should be differentiated from primary or metastatic gestational choriocarcinoma affecting the ovary. The prognosis of germ cell derived choriocarcinoma is less favorable and requires more aggressive chemotherapy treatment regimens compared to gestational choriocarcinoma.


Ovarian Dedifferentiated Carcinoma

An aggressive carcinoma arising from the ovary.  Most patients present with advanced disease.  Microscopically, it is characterized by the presence of an undifferentiated carcinomatous component and a second component of either endometrioid carcinoma or, rarely, serous carcinoma.


Borderline Ovarian Endometrioid Cystadenofibroma

An epithelial neoplasm that arises from the ovary characterized by the presence of cystic spaces which are lined by atypical glandular epithelial cells resembling endometrial cells. The surrounding ovarian stroma is fibrotic. There is no evidence of stromal invasion.


Ovarian Sex Cord Tumor with Annular Tubules

An ovarian sex cord-stromal tumor characterized by the presence of Sertoli cells forming annular tubules. It may be associated with Peutz-Jeghers syndrome. Cases associated with Peutz-Jeghers syndrome have followed a benign clinical course. Cases which are not associated with Peutz-Jeghers syndrome have been reported having a clinically malignant course.


Stage III Ovarian Germ Cell Tumor AJCC v6 and v7

Stage III includes: T3, N0, M0. T3: Tumor involves one or both both ovaries with microscopically confirmed peritoneal metastasis outside pelvis. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Stage III Ovarian Cancer AJCC v8

Stage III includes: IIIA1: T1/2, N1, M0; IIIA2: T3a, N0/N1, M0; IIIB: T3b, N0/N1, M0; IIIC: T3c, N0/N1, M0. T1: Ovarian cancer with tumor limited to ovaries (one or both). T2: Ovarian cancer with tumor involving one or both ovaries with pelvic extension below pelvic brim. T3a: Ovarian cancer with microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes. T3b: Ovarian cancer with macroscopic peritoneal metastasis beyond pelvis 2 cm or less in greatest dimension with or without metastasis to the retroperitoneal lymph nodes. T3c: Ovarian cancer with macroscopic peritoneal metastasis beyond the pelvis more than 2 cm in greatest dimension with or without metastasis to the retroperitoneal lymph nodes (includes extension of tumor to capsule of liver and spleen without parenchymal involvement of either organ). N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.)


Stage II Ovarian Embryonal Carcinoma AJCC v6 and v7

Stage II includes: T2, N0, M0. T2: Tumor involves one or both ovaries with pelvic extension and/or implants. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.)


Ovarian Retiform Sertoli-Leydig Cell Tumor

A Sertoli-Leydig cell tumor of the ovary in which anastomosing, slit-like spaces resembling rete testis constitute at least 90% of the tumor elements. It may present with estrogenic and less often androgenic manifestations. It usually follows a benign clinical course.


Borderline Ovarian Mucinous Tumor/Atypical Proliferative Ovarian Mucinous Tumor

A non-invasive neoplasm that arises from the ovary and is composed of gastrointestinal-type, mucin-containing epithelial cells.  It shows greater cellular proliferation and cytologic atypia as compared to benign ovarian mucinous tumors.


Unresectable Platinum-Resistant Ovarian Carcinoma

Platinum-resistant ovarian carcinoma that is not amenable to surgical resection.


Ovarian germ cell choriocarcinoma stage IV

Stage IV includes: Any T, Any N, M1. M1: Distant metastasis (excludes peritoneal metastasis). (AJCC 6th and 7th eds.)


Borderline Ovarian Clear Cell Tumor/Atypical Proliferative Ovarian Clear Cell Tumor

A non-invasive clear cell adenofibromatous neoplasm that arises from the ovary. It is characterized by the presence of atypia in the glandular epithelium.


Stage IIIA Choroidal and Ciliary Body Melanoma AJCC v8

Stage IIIA includes: (T2c-d, N0, M0); (T3b-c, N0, M0); (T4a, N0, M0). T2c: Tumor size category 2 without ciliary body involvement but with extraocular extension less than or equal to 5 mm in largest diameter. T2d: Tumor size category 2 with ciliary body involvement and extraocular extension less than or equal to 5 mm in largest diameter. T3b: Tumor size category 3 with ciliary body involvement. T3c: Tumor size category 3 without ciliary body involvement but with extraocular extension less than or equal to 5 mm in largest diameter. T4a: Tumor size category 4 without ciliary body involvement and extraocular extension. N0: No regional lymph node metastasis. M0: No distant metastasis.  (AJCC 8th ed.)


mosaic trisomy 16

Mosaic trisomy 16 is a rare chromosomal anomaly syndrome with a highly variable phenotype ranging from minor anomalies with normal development to intrauterine growth retardation, abnormal skin pigmentation, craniofacial and body asymmetry, cardiac (e.g. ventricular septal defect) and genital (e.g. hypospadias, cryptorchidism) anomalies, scoliosis and hearing loss to neonatal death. Additional features observed include skeletal malformations (e.g. clino/polydactyly, talipes), mild facial dysmorphism, and developmental delay.


Grade 2 Urinary Frequency, CTCAE

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Limiting instrumental ADL; medical management indicated


Postneoadjuvant Therapy Stage IIIB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIIB includes: (T3, N1, M0); (T0-3, N2, M0); (T4a, N0, M0). T0: No evidence of primary tumor. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Gastric Cardia Squamous Cell Carcinoma

A squamous cell carcinoma that arises from the gastric cardia.


Grade 2 Other Intra-Operative Injury, CTCAE


Grade 1 Other Intra-Operative Injury, CTCAE


Grade 3 Other Intra-Operative Injury, CTCAE


Grade 4 Other Intra-Operative Injury, CTCAE


Partington syndrome

A rare neurological condition that is primarily characterized by mild to moderate intellectual disability and dystonia of the hands. Other signs and symptoms may include dysarthria, behavioral abnormalities, recurrent seizures and/or an unusual gait (style of walking). Partington syndrome usually occurs in males; when it occurs in females, the signs and symptoms are often less severe. It is caused by changes (mutations) in the ARX gene and is inherited in an X-linked recessive manner. Treatment is based on the signs and symptoms present in each person.


hydroxynaphthoquinone

Any naphthoquinone in which the naphthaoquinone moiety is substituted by at least one hydroxy group.


Any member of the class of 1,4-naphthoquinones in which the naphthoquinone moiety is substituted by at least one hydroxy group.


glucocorticoid deficiency 4

Any familial glucocorticoid deficiency in which the cause of the disease is a mutation in the NNT gene.


Grade 3 Hypotension, CTCAE

Medical intervention indicated; hospitalization indicated


Stage IV Esophageal Squamous Cell Carcinoma AJCC v7

Stage IV includes: Any T, Any N, M1, Any G, Tumor location: Any.  M1: Distant metastasis.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Esophageal Well Differentiated Squamous Cell Carcinoma

An esophageal squamous cell carcinoma characterized by the presence of prominent keratinization and low mitotic activity.


Clinical Stage IV Esophageal Squamous Cell Carcinoma AJCC v8

Stage IV includes: IVA: (T4, N0-2, M0); (Any T, N3, M0); IVB: (Any T, Any N, M1). T4: Tumor invades adjacent structures. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. M1: Distant metastasis. (AJCC 8th ed.)


Postneoadjuvant Therapy Stage I Esophageal Squamous Cell Carcinoma AJCC v8

Stage I includes: T0-2, N0, M0. T0: No evidence of primary tumor. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)


Cervical Esophagus Squamous Cell Carcinoma

A squamous cell carcinoma that arises from the cervical esophagus.


Clinical Stage II Esophageal Squamous Cell Carcinoma AJCC v8

Stage II includes: (T2, N0-1, M0); (T3, N0, M0). T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Stage II Esophageal Squamous Cell Carcinoma AJCC v7

Stage II includes: IIA (T2-3, N0, M0, G1, GX, Tumor location: Upper, middle); (T2-3, N0, M0, G2-3, Tumor location: Lower, X); IIB (T2-3, N0, M0, G2-3, Tumor location: Upper, middle); (T1-2, N1, M0, Any G, Tumor location: Any).  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  N0: No regional lymph node metastasis.  N1: Metastasis in 1-2 regional lymph nodes.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  G2: Moderately differentiated.  G3: Poorly differentiated.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Pathologic Stage 0 Esophageal Squamous Cell Carcinoma AJCC v8

Stage 0 includes: Tis, N0, M0, GN/A, Tumor location: Any. Tis: High-grade dysplasia, defined as malignant cells confined to the epithelium by the basement membrane. N0: No regional lymph node metastasis. M0: No distant metastasis. GN/A: Grade non-applicable. (AJCC 8th ed.)


Stage IB Esophageal Squamous Cell Carcinoma AJCC v7

Stage IB includes: (T1, N0, M0, G2-3, Tumor location: Any); (T2-3, N0, M0, G1, GX, Tumor location: Lower, X). T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  G2: Moderately differentiated.  G3: Poorly differentiated.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Pathologic Stage IB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IB includes: (T1a, N0, M0, G2-3, Tumor location: Any); (T1b, N0, M0, G1-3, Tumor location: Any); (T1b, N0, M0, GX, Tumor location: Any); (T2, N0, M0, G1, Tumor location: Any). T1a: Tumor invades the lamina propria or muscularis mucosae. T1b: Tumor invades the submucosa. T2: Tumor invades the muscularis propria. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well-differentiated. GX: Grade cannot be assessed. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated. (AJCC 8th ed.)


Stage IIIC Esophageal Squamous Cell Carcinoma AJCC v7

Stage IIIC includes: (T4a, N1-2, M0, Any G, Tumor location: Any); (T4b, Any N, M0, Any G, Tumor location: Any); (Any T, N3, M0, Any G, Tumor location: Any).  T4a: Resectable tumor invading pleura, pericardium, or diaphragm. T4b: Unresectable tumor invading other adjacent structures, such as aorta, vertebral body, trachea, etc. N1: Metastasis in 1-2 regional lymph nodes.  N2: Metastasis in 3-6 regional lymph nodes.  N3: Metastasis in seven or more regional lymph nodes.  M0: No distant metastasis.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Postneoadjuvant Therapy Stage III Esophageal Squamous Cell Carcinoma AJCC v8

Stage III includes: IIIA: (T0-2, N1, M0); IIIB: (T3, N1, M0); (T0-3, N2, M0); (T4a, N0, M0). T0: No evidence of primary tumor. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Stage I Esophageal Squamous Cell Carcinoma AJCC v7

Stage I includes: IA (T1, N0, M0, G1, GX, Tumor location: Any); IB (T1, N0, M0, G2-3, Tumor location: Any); (T2-3, N0, M0, G1, GX, Tumor location: Lower, X). T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  G2: Moderately differentiated.  G3: Poorly differentiated.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Esophageal Squamous Cell Carcinoma by AJCC v7 Stage

A term that refers to the staging of esophageal squamous cell carcinoma according to the American Joint Committee on Cancer, 7th edition.


Pathologic Stage IA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IA includes: (T1a, N0, M0, G1, Tumor location: Any); (T1a, N0, M0, GX, Tumor location: Any). T1a: Tumor invades the lamina propria or muscularis mucosae. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well-differentiated. GX: Grade cannot be assessed. (AJCC 8th ed.)


Clinical Stage IVB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IVB includes: Any T, Any N, M1. M1: Distant metastasis. (AJCC 8th ed.)


Stage IIA Esophageal Squamous Cell Carcinoma AJCC v7

Stage IIA includes: (T2-3, N0, M0, G1, GX, Tumor location: Upper, middle); (T2-3, N0, M0, G2-3, Tumor location: Lower, X). T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  G2: Moderately differentiated.  G3: Poorly differentiated.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Refractory Esophageal Squamous Cell Carcinoma

Esophageal squamous cell carcinoma that is resistant to treatment.


Pathologic Stage IV Esophageal Squamous Cell Carcinoma AJCC v8

Stage IV includes: IVA: (T4a, N2, M0, Any G, Tumor location: Any); (T4b, N0-2, M0, Any G, Tumor location: Any); (Any T, N3, M0, Any G, Tumor location: Any); IVB: (Any T, Any N, M1, Any G, Tumor location: Any). T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. T4b: Tumor invades other adjacent structures, such as the aorta, vertebral body, or airway. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. M1: Distant metastasis. (AJCC 8th ed.)


Stage IV Esophageal Squamous Cell Carcinoma

A squamous cell carcinoma that arises from the esophagus and has metastasized to another anatomic site.


Pathologic Stage IIA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIA includes: (T2, N0, M0, G2-3, Tumor location: Any); (T2, N0, M0, GX, Tumor location: Any); (T3, N0, M0, Any G, Tumor location: Lower); (T3, N0, M0, G1, Tumor location: Upper/middle). T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. M0: No distant metastasis. GX: Grade cannot be assessed. G1: Well-differentiated. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated. (AJCC 8th ed.)


Alcohol-Related Esophageal Squamous Cell Carcinoma

An esophageal carcinoma that results from alcohol consumption.  The alcohol-related esophageal carcinomas are always of squamous cell type.  There is no association between alcohol consumption and esophageal adenocarcinomas.


Esophageal Squamous Cell Carcinoma by AJCC v8 Postneoadjuvant Therapy Stage

A term that refers to the postneoadjuvant therapy staging of esophageal squamous cell carcinoma according to the American Joint Committee on Cancer, 8th edition.


Pathologic Stage IVB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IVB includes: Any T, Any N, M1, Any G, Tumor location: Any. M1: Distant metastasis. (AJCC 8th ed.)


Unresectable Esophageal Squamous Cell Carcinoma

Esophageal squamous cell carcinoma that is not amenable to surgical resection.


Stage IIIB Esophageal Squamous Cell Carcinoma AJCC v7

Stage IIIB includes: T3, N2, M0, Any G, Tumor location: Any. T3: Tumor invades adventitia. N2: Metastasis in 3-6 regional lymph nodes.  M0: No distant metastasis.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Clinical Stage III Esophageal Squamous Cell Carcinoma AJCC v8

Stage III includes: (T3, N1, M0); (T1-3, N2, M0). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Postneoadjuvant Therapy Stage IVB Esophageal Squamous Cell Carcinoma AJCC v8


Esophageal Poorly Differentiated Squamous Cell Carcinoma

An esophageal squamous cell carcinoma characterized by the presence of basal-like malignant squamous cells that form nests, often associated with central necrosis.


Advanced Esophageal Squamous Cell Carcinoma

Esophageal squamous cell carcinoma that has spread extensively to other anatomic sites or is no longer responding to treatment


Clinical Stage 0 Esophageal Squamous Cell Carcinoma AJCC v8

Stage 0 includes: Tis, N0, M0. Tis: High-grade dysplasia, defined as malignant cells confined to the epithelium by the basement membrane. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)


Stage IIB Esophageal Squamous Cell Carcinoma AJCC v7

Stage IIB includes: (T2-3, N0, M0, G2-3, Tumor location: Upper, middle); (T1-2, N1, M0, Any G, Tumor location: Any).  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  N0: No regional lymph node metastasis.  N1: Metastasis in 1-2 regional lymph nodes.  M0: No distant metastasis.  G2: Moderately differentiated.  G3: Poorly differentiated.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Thoracic Esophagus Squamous Cell Carcinoma

A squamous cell carcinoma that arises from the thoracic esophagus.


Esophageal Squamous Cell Carcinoma by AJCC v8 Pathologic Stage

A term that refers to the pathologic staging of esophageal squamous cell carcinoma according to the American Joint Committee on Cancer, 8th edition.


Human Papillomavirus-Related Esophageal Squamous Cell Carcinoma

An esophageal squamous cell carcinoma that arises from squamous epithelial cells infected with human papillomavirus.


Pathologic Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IVA includes: (T4a, N2, M0, Any G, Tumor location: Any); (T4b, N0-2, M0, Any G, Tumor location: Any); (Any T, N3, M0, Any G, Tumor location: Any). T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. T4b: Tumor invades other adjacent structures, such as the aorta, vertebral body, or airway. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Clinical Stage I Esophageal Squamous Cell Carcinoma AJCC v8

Stage I includes: T1, N0-1, M0. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Pathologic Stage IIIA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIIA includes: (T1, N2, M0, Any G, Tumor location: Any); (T2, N1, M0, Any G, Tumor location: Any). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Postneoadjuvant Therapy Stage II Esophageal Squamous Cell Carcinoma AJCC v8

Stage II includes: T3, N0, M0. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)


Distal Esophagus Squamous Cell Carcinoma

A squamous cell carcinoma that arises from the distal esophagus.


Locally Advanced Esophageal Squamous Cell Carcinoma

Esophageal squamous cell carcinoma that has spread from its original site of growth to nearby tissues or lymph nodes.


Esophageal Carcinoma Cuniculatum

An extremely rare, well-differentiated squamous cell carcinoma that arises from the esophagus. It is characterized by the presence of hyperkeratosis, acanthosis, dyskeratosis, keratin-filled cysts, koilocyte-like cells, intraepithelial neutrophils, and focal cytologic atypia.


Stage IA Esophageal Squamous Cell Carcinoma AJCC v7

Stage IA includes: T1, N0, M0, G1, GX, Tumor location: Any. T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  N0: No regional lymph node metastasis.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Stage IIIA Esophageal Squamous Cell Carcinoma AJCC v7

Stage IIIA includes: (T1-2, N2, M0, Any G, Tumor location: Any); (T3, N1, M0, Any G, Tumor location: Any); (T4a, N0, M0, Any G, Tumor location: Any). T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. T4a: Resectable tumor invading pleura, pericardium, or diaphragm. N0: No regional lymph node metastasis.  N1: Metastasis in 1-2 regional lymph nodes.  N2: Metastasis in 3-6 regional lymph nodes.  M0: No distant metastasis.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Pathologic Stage IIIB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIIB includes: (T2, N2, M0, Any G, Tumor location: Any); (T3, N1-2, M0, Any G, Tumor location: Any); (T4a, N0-1, M0, Any G, Tumor location: Any). T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Stage 0 Esophageal Squamous Cell Carcinoma AJCC v7

Stage 0 includes: Tis (HGD), N0, M0, G1, GX, Tumor location: Any.  Tis: High-grade dysplasia.  N0: No regional lymph node metastasis.  M0: No distant metastasis.  G1: Well differentiated.  GX: Grade cannot be assessed-stage grouping as G1.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Postneoadjuvant Therapy Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IVA includes: (T4a, N1-2, M0); (T4a, NX, M0); (T4b, N0-2, M0); (Any T, N3, M0). T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. T4b: Tumor invades other adjacent structures, such as the aorta, vertebral body, or airway. NX: Regional lymph nodes cannot be assessed. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Clinical Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IVA includes: (T4, N0-2, M0); (Any T, N3, M0). T4: Tumor invades adjacent structures. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Pathologic Stage IIB Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIB includes: (T3, N0, M0, G2-3, Tumor location: Upper/middle); (T3, N0, M0, GX, Tumor location: Any); (T3, N0, M0, Any G, Tumor location: Unknown); (T1, N1, M0, Any G, Tumor location: Any). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. GX: Grade cannot be assessed. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated (AJCC 8th ed.)


Postneoadjuvant Therapy Stage IIIA Esophageal Squamous Cell Carcinoma AJCC v8

Stage IIIA includes: T0-2, N1, M0. T0: No evidence of primary tumor. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Stage III Esophageal Squamous Cell Carcinoma AJCC v7

Stage III includes: IIIA (T1-2, N2, M0, Any G, Tumor location: Any); (T3, N1, M0, Any G, Tumor location: Any); (T4a, N0, M0, Any G, Tumor location: Any); IIIB (T3, N2, M0, Any G, Tumor location: Any); IIIC (T4a, N1-2, M0, Any G, Tumor location: Any); (T4b, Any N, M0, Any G, Tumor location: Any); (Any T, N3, M0, Any G, Tumor location: Any).  T1: Tumor invades lamina propria, muscularis mucosae, or submucosa.  T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. T4a: Resectable tumor invading pleura, pericardium, or diaphragm. T4b: Unresectable tumor invading other adjacent structures, such as aorta, vertebral body, trachea, etc. N0: No regional lymph node metastasis.  N1: Metastasis in 1-2 regional lymph nodes.  N2: Metastasis in 3-6 regional lymph nodes.  N3: Metastasis in seven or more regional lymph nodes.  M0: No distant metastasis.  Tumor location: Location of the primary cancer site is defined by the position of the upper (proximal) edge of the tumor in the esophagus.  (AJCC 7th ed.)


Pathologic Stage III Esophageal Squamous Cell Carcinoma AJCC v8

Stage III includes: IIIA: (T1, N2, M0, Any G, Tumor location: Any); (T2, N1, M0, Any G, Tumor location: Any); IIIB: (T2, N2, M0, Any G, Tumor location: Any); (T3, N1-2, M0, Any G, Tumor location: Any); (T4a, N0-1, M0, Any G, Tumor location: Any). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. T3: Tumor invades adventitia. T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.)


Esophageal Squamous Cell Carcinoma by AJCC v8 Stage

A term that refers to the staging of esophageal squamous cell carcinoma according to the American Joint Committee on Cancer, 8th edition.


Pathologic Stage II Esophageal Squamous Cell Carcinoma AJCC v8

Stage II includes: IIA: (T2, N0, M0, G2-3, Tumor location: Any); (T2, N0, M0, GX, Tumor location: Any); (T3, N0, M0, Any G, Tumor location: Lower); (T3, N0, M0, G1, Tumor location: Upper/middle); IIB: (T3, N0, M0, G2-3, Tumor location: Upper/middle); (T3, N0, M0, GX, Tumor location: Any); (T3, N0, M0, Any G, Tumor location: Unknown); (T1, N1, M0, Any G, Tumor location: Any). T2: Tumor invades the muscularis propria. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. GX: Grade cannot be assessed. G1: Well-differentiated. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated. (AJCC 8th ed.)


Esophageal Squamous Cell Carcinoma by AJCC v8 Clinical Stage

A term that refers to the clinical staging of esophageal squamous cell carcinoma according to the American Joint Committee on Cancer, 8th edition.


Postneoadjuvant Therapy Stage IV Esophageal Squamous Cell Carcinoma AJCC v8

Stage IV includes: IVA: (T4a, N1-2, M0); (T4a, NX, M0); (T4b, N0-2, M0); (Any T, N3, M0); IVB: (Any T, Any N, M1). T4a: Tumor invades the pleura, pericardium, azygos vein, diaphragm, or peritoneum. T4b: Tumor invades other adjacent structures, such as the aorta, vertebral body, or airway. NX: Regional lymph nodes cannot be assessed. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor with metastasis in seven or more regional lymph nodes. M0: No distant metastasis. M1: Distant metastasis. (AJCC 8th ed.)


Esophageal Spindle Cell Carcinoma

An esophageal squamous cell carcinoma characterized by the presence of a spindle-cell carcinomatous component.  Crossly it has a polypoid appearance and usually arises from the middle or lower third of the esophagus.


Esophageal Moderately Differentiated Squamous Cell Carcinoma

An esophageal squamous cell carcinoma characterized by the presence of variable morphologic characteristics that include areas of prominent and poor keratinization.


Pathologic Stage I Esophageal Squamous Cell Carcinoma AJCC v8

Stage I includes: IA: (T1a, N0, M0, G1, Tumor location: Any); (T1a, N0, M0, GX, Tumor location: Any); IB: (T1a, N0, M0, G2-3, Tumor location: Any); (T1b, N0, M0, G1-3, Tumor location: Any); (T1b, N0, M0, GX, Tumor location: Any); (T2, N0, M0, G1, Tumor location: Any). T1a: Tumor invades the lamina propria or muscularis mucosae. T1b: Tumor invades the submucosa. T2: Tumor invades the muscularis propria. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well-differentiated. GX: Grade cannot be assessed. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated. (AJCC 8th ed.)


idiopathic hypersomnia with long sleep time

Idiopathic hypersomnia with long sleep time is a sleep disorder characterized by good quality night rest of 10 hours or more, excessive daytime drowsiness that is more or less continual with long episodes of non-restorative sleep, and difficult waking with sleep drunkenness or sleep inertia.


Senior-Loken syndrome 5

Any Senior-Loken syndrome in which the cause of the disease is a mutation in the IQCB1 gene.


Grade 3 Lens Infection with Unknown Absolute Neutrophil Count, CTCAE


Lens Infection with Unknown Absolute Neutrophil Count, CTCAE


Grade 4 Lens Infection with Unknown Absolute Neutrophil Count, CTCAE


Grade 2 Lens Infection with Unknown Absolute Neutrophil Count, CTCAE


Grade 5 Lens Infection with Unknown Absolute Neutrophil Count, CTCAE


valerate ester

A carboxylic ester obtained by formal condensation of the carboxy group of valeric (pentanoic) acid with the hydroxy group of any alcohol or phenol.


Grade 2 Pharyngeal Anastomotic Leak, CTCAE

Symptomatic; medical intervention indicated


Stage IA Gastric and Omental Gastrointestinal Stromal Tumor AJCC v8

Stage IA includes: T1 or T2, N0, M0, Low Mitotic Rate. T1: Tumor measuring 2 cm or less. T2: Tumor measuring more than 2 cm but not more than 5 cm. N0: No regional lymph node metastasis or unknown lymph node status. M0: No distant metastasis. Low Mitotic Rate: Five or fewer mitoses per 5 square millimeters, or per 50 HPF. (AJCC 8th ed.)


fallopian tube teratoma

A teratoma that arises from the fallopian tube. It is a rare tumor, often found incidentally.


fallopian tube germ cell tumor

A rare germ cell tumor that affects the fallopian tube. The vast majority of cases are teratomas.


fallopian tube benign neoplasm

A non-metastasizing neoplasm that arises from the fallopian tube. Representative examples include papilloma, adenofibroma, and leiomyoma.


fallopian tube leiomyoma

A benign smooth muscle neoplasm arising from the fallopian tube. It is characterized by the presence of spindle cells with cigar-shaped nuclei, interlacing fascicles, and a whorled pattern.


cancer of isthmus of fallopian tube

A cancer that involves the UBERON:0016632.


fallopian tube leiomyosarcoma

An aggressive malignant smooth muscle neoplasm, arising from the fallopian tube. It is characterized by a proliferation of neoplastic spindle cells.


fallopian tube adenosarcoma

An extremely rare malignant neoplasm that arises from the fallopian tube and is characterized by the presence of a benign epithelial component and a sarcomatous component.


fallopian tube endometrioid tumor

A benign, borderline, or malignant epithelial tumor of the fallopian tube that is characterized by the presence of glands and/or cysts lined by neoplastic cells that resemble endometrial cells.


Hurting Pain

A sensation of discomfort or distress that is very unpleasant.


demodicidosis

Demodicidosis is a rare parasitic cutaneous disease due to Demodex mite infestation characterized by variable degrees of spinulosis, erythema, papules, and pustules, usually accompanied by a burning or pruritic sensation. Face (incl. eyelids) is most frequently affected, but ear canal, scalp, neck, back, chest, nipples, buttocks, penis, and extremity (legs and arms) involvement have also been observed. Dermoscopic examination reveals Demodex tails and follicular openings.


demodicidosis of sebaceous gland

A demodicidosis that involves the sebaceous gland.


Mold or Dust Allergy

An allergic reaction triggered by exposure to airborne allergens expressed by dust mites or molds.


hypersensitivity reaction disease

An immune system disease that has basis in dysregulation of the hypersensitivity reaction, an inflammatory response to an exogenous environmental antigen or an endogenous antigen initiated by the adaptive immune system.


Cat allergy (disorder)

An allergic reaction triggered by exposure to allergens expressed by cats, includes allergenic factors found in feline saliva and dander.


Processed Food Allergy

An allergic reaction triggered by exposure to allergens found in processed foods.


Shellfish allergy

An allergic reaction triggered by exposure to allergens found in foods containing molluscs, crustaceans or echinoderms.


Dog Allergy

An allergic reaction triggered by exposure to allergens expressed by dogs, includes allergenic factors found in canine saliva and dander.


Venomous Ant Bite Allergy

An allergic reaction triggered by exposure to ant venom, usually as a result of being bitten by a fire ant (Solenopsis spp.).


Allergy to fruit

An allergic reaction triggered by exposure to foodborne allergens found in fruit.


type III hypersensitivity disease

Group of diseases mediated by the deposition of large soluble complexes of antigen and antibody with resultant damage to tissue. Besides serum sickness and the arthus reaction, evidence supports a pathogenic role for immune complexes in many other immune system diseases including glomerulonephritis, systemic lupus erythematosus (lupus erythematosus, systemic) and polyarteritis nodosa.


Allergy to bee venom

An allergic reaction triggered by being exposed to bee venom following a bee sting.


Contact hypersensitivity

Contact hypersensitivity is an inflammatory response induced by antigen-reactive T cells that are exposed to antigen on the skin surface (epidermis).  Poison ivy is a frequent cause of such reactivity, due to the urushiol from the plant, as are a variety of antigens derived from industrial exposure (e.g. rubber, chromate, nickel).  These antigens induce the appearance of Th1-like T cells, which presumably produce IFN to activate macrophages.


Wasp Sting Allergy

An allergic reaction triggered by being exposed to wasp venom following a wasp sting.


Dairy or Lactose Intolerance Allergy

An allergic reaction triggered by exposure to allergens found in foods containing lactose or other dairy components.


type II cellular hypersensitivity

A hypersensitivity reaction mediated by antibodies formed against cell surface antigens.


Coal Dust Exposure

Environmental or occupational exposure to dust derived during the processing of coal.


Blast Phase Myeloproliferative Neoplasm

Transformation of a myeloproliferative neoplasm into acute myeloid leukemia, typically via accelerated phase myeloproliferative neoplasm. Myeloblasts account for 20% or more of the peripheral blood white cells or the nucleated cells in the bone marrow.


Blast Phase Primary Myelofibrosis

Transformation of primary myelofibrosis into acute myeloid leukemia, typically via accelerated phase primary myelofibrosis. Myeloblasts account for 20% or more of the peripheral blood white cells or the nucleated cells in the bone marrow.


Kasabach-Merritt syndrome

Kasabach-Merritt syndrome (KMS), also known as hemangioma-thrombocytopenia syndrome, is a rare disorder characterized by profound thrombocytopenia, microangiopathic hemolytic anemia, and subsequent consumptive coagulopathy in association with vascular tumors, particularly kaposiform hemangioendothelioma or tufted angioma.


gonococcal synovitis

An synovitis (disease) caused by infection with Neisseria gonorrhoeae.


sclerema neonatorum

A diffuse hardening of skin and subcutaneous adipose tissue, associated with minimal inflammation without fat necrosis, that typically affects critically ill preterm neonates during the first week of life.


Stage IB Uterine Corpus Endometrial Stromal Sarcoma AJCC v8

Stage IB includes: T1b, N0, M0. T1b: Uterine corpus endometrial stroma sarcoma with tumor limited to the uterus, measuring more than 5 cm in greatest dimension. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th Ed.)


Butopamine

A 4-(1-hydroxy-2-{[4-(4-hydroxyphenyl)butan-2-yl]amino}ethyl)phenol in which both stereocentres have R configuration. It is the most active of the four diastereoisomers that make up the animal feed additive ractopamine.


Fracture of Long Bone Related to Birth

An injury sustained during the birthing process in which the continuity is broken in any bone that is longer in length than width.


granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 3


alpha-mannosidosis

Alpha-mannosidosis is an inherited lysosomal storage disorder characterized by immune deficiency, facial and skeletal abnormalities, hearing impairment, and intellectual deficit.


beta-mannosidosis

Beta-mannosidosis is a very rare lysosomal storage disease characterized by developmental delay of varying severity and hearing loss, but that can manifest a wide phenotypic heterogeneity.


anemia, nonspherocytic hemolytic, due to G6PD deficiency

An X-linked genetic condition caused by alterations in the gene G6PD that result in severely decreased activity levels of the enzyme glucose-6-phosphate dehydrogenase. Individuals with hemizygous G6PD variants associated with CNSHA have CNSHA. Individuals with G6PD variants that cause CNSHA are at risk for acute hemolytic anemia in response to certain medication exposures, chemical exposures, infections, or consumption of fava beans.


anemia, nonspherocytic hemolytic, associated with abnormality of red cell membrane


anemia, nonspherocytic hemolytic, possibly due to defect in porphyrin metabolism


heritable pulmonary arterial hypertension

Heritable pulmonary arterial hypertension (HPAH) is a form of pulmonary arterial hypertension (PAH), occurring due to mutations in PAH predisposing genes or in a familial context. HPAH is characterized by elevated pulmonary arterial resistance leading to right heart failure. HPAH is progressive and potentially fatal.


Grade 1 Oligospermia, CTCAE

Sperm concentration > 0 to < 15 million/ml


disease

A disease is a disposition to undergo pathological processes that exists in an organism because of one or more disorders in that organism.


sporadic adult-onset ataxia of unknown etiology

Sporadic adult-onset ataxia of unknown etiology describes a group of non-hereditary degenerative ataxias characterized by a slowly progressive cerebellar syndrome (with ataxia of stance and gait, upper limb dysmetria and intention tremor, ataxic speech, and oculomotor abnormalities), presenting in adulthood (at around 50 years of age), that is not due to a known cause. Extracerebellar symptoms (e.g., decreased vibration sense and absent or decreased ankle reflexes), polyneuropathy and mild autonomic dysfunction may also be present. Mild cognitive impairment has also rarely been reported.


hypogonadotropic hypogonadism 13 with or without anosmia

Any hypogonadotropic hypogonadism in which the cause of the disease is a mutation in the KISS1 gene.


craniosynostosis arthrogryposis cleft palate


baclofen withdrawal syndrome

Withdrawal syndrome involving the abrupt discontinuation of baclofen therapy (intrathecal or oral). Baclofen withdrawal syndrome can result in high fever, altered mental status (including agitation, insomnia, confusion, delusions, hallucinations, seizures, visual changes, or psychosis), and potentially profound muscular rigidity that sometimes progresses to fatal rhabdomyolysis.


hereditary thrombocytopenia and hematologic cancer predisposition syndrome

The disorder is characterized by thrombocytopenia of varying severity and a predisposition to hematologic malignancies. It may be caused due to germ line variations in the RUNX1, ETV6 or ANKRD26 genes.


congenital adrenal hyperplasia due to cytochrome P450 oxidoreductase deficiency

Congenital adrenal hyperplasia due to cytochrome P450 oxidoreductase deficiency is a unique form of congenital adrenal hyperplasia (CAH) characterized by glucocorticoid deficiency, severe sexual ambiguity in both sexes and skeletal (especially craniofacial) malformations.


acute pharyngitis

An acute and painful inflammatory process that affects the pharynx. It is usually caused by viruses and less often bacteria. Signs and symptoms include discomfort on swallowing, low-grade fever, headache, and earache.


benign melanocytic skin nevus

A benign, circumscribed proliferation of melanocytes in the skin. Variants include the Spitz nevus, halo nevus, blue nevus, and balloon cell nevus.


acquired ichthyosis

Noninherited ichthyosis associated with malignancy; autoimmune, inflammatory, nutritional, metabolic, infectious, and neurologic diseases; or medications.


abducens nerve palsy

Paralysis of the abducens nerve.


classic congenital adrenal hyperplasia

A severe form of congenital adrenal hyperplasia characterized by very low or absent activity of an enzyme in the steroidogenic pathway typically presenting early in life, and requiring life-long cortisol replacement.