Stage III Nasopharyngeal Keratinizing Squamous Cell Carcinoma AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** 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.)

**Synonyms:** - Stage III Keratinizing Epidermoid Carcinoma of Nasopharynx - Stage III Keratinizing Epidermoid Carcinoma of the Nasopharynx - Stage III Keratinizing Squamous Cell Carcinoma of Nasopharynx - Stage III Keratinizing Squamous Cell Carcinoma of the Nasopharynx - Stage III Nasopharyngeal Keratinizing Epidermoid Carcinoma - Stage III Nasopharyngeal Keratinizing Squamous Cell Carcinoma - Stage III Nasopharyngeal Throat Keratinizing Squamous Cell Cancer