Stage IVB Oropharyngeal Squamous Cell Carcinoma AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage IVB includes: (T4b, Any N, M0); (Any T, N3, M0). T4b: Tumor with very advanced local disease. Tumor invades lateral pterygoid muscle, pterygoid plates, lateral nasopharynx, or skull base or encases carotid artery. N3: Tumor with metastasis in a lymph node more than 6 cm in greatest dimension. M0: No distant metastasis. (AJCC 7th ed.)

**Synonyms:** - Stage IVB Epidermoid Carcinoma of Oropharynx - Stage IVB Epidermoid Carcinoma of the Oropharynx - Stage IVB Oropharyngeal Epidermoid Carcinoma - Stage IVB Oropharyngeal Squamous Cell Carcinoma - Stage IVB Oropharyngeal Throat Squamous Cell Cancer - Stage IVB Oropharynx Epidermoid Carcinoma - Stage IVB Oropharynx Squamous Cell Carcinoma - Stage IVB Squamous Cell Carcinoma of Oropharynx - Stage IVB Squamous Cell Carcinoma of the Oropharynx