label: Stage III Nasopharyngeal Carcinoma AJCC v7
label_lc: stage iii nasopharyngeal carcinoma ajcc v7
description: "Stage III includes: (T1, N2, M0); (T2, N2, M0); (T3, N0, M0); (T3, N1, M0); (T3, N2, M0). T1: Nasopharyngeal cancer with tumor confined to the nasopharynx, or tumor extending to oropharynx and/or nasal cavity without parapharyngeal extension.  Parapharyngeal extension denotes posterolateral infiltration of tumor. T2: Nasopharyngeal cancer with parapharyngeal extension.  Parapharyngeal extension denotes posterolateral infiltration of tumor.  T3: Nasopharyngeal cancer with tumor involving bony structures of skull base and/or paranasal sinuses.  N0: No regional lymph node metastasis. N1: Nasopharyngeal cancer with unilateral metastasis in cervical lymph node(s), 6 cm or less in greatest dimension, above the supraclavicular fossa, and/or unilateral or bilateral, retropharyngeal lymph nodes, 6 cm or less in greatest dimension.  Midline nodes are considered ipsilateral nodes.  N2: Nasopharyngeal cancer with bilateral metastasis in cervical lymph node(s), 6 cm or less in greatest dimension, above the supraclavicular fossa.  Midline nodes are considered ipsilateral nodes. M0: No distant metastasis. (AJCC 7th ed.)"