label: Mediastinal Germ Cell Tumor with Somatic-Type Malignancy
label_lc: mediastinal germ cell tumor with somatic-type malignancy
description: A rare extragonadal germ cell tumor that arises from the mediastinum and is associated with the presence of a somatic-type malignant component.  The somatic malignancy is usually a sarcoma (e.g., embryonal rhabdomyosarcoma, angiosarcoma, or leiomyosarcoma), adenocarcinoma, squamous cell carcinoma, adenosquamous carcinoma, or primitive neuroectodermal tumor.  The prognosis is poor.