Stage IV Oropharyngeal Carcinoma AJCC v6

**Semantic type:** Neoplastic Process

**Definition:** Stage IV includes: IVA (T4a, N0, M0); (T4a, N1, M0); (T1, N2, M0); (T2, N2, M0); (T3, N2, M0); (T4a, N2, M0); IVB (T4b, Any N, M0); IVC (Any T, Any N, M1). T4a: Tumor invades the larynx, deep/extrinsic muscle of tongue, medial pterygoid, hard palate, or mandible. T4b: Tumor invades lateral pterygoid muscle, pterygoid plates lateral nasopharynx, or skull base or encases carotid artery. M1: Distant Metastasis. (AJCC 6th ed.)

**Synonyms:** - Oropharyngeal Cancer Stage IV AJCC v6 - Stage IV Carcinoma of Oropharynx AJCC v6 - Stage IV Carcinoma of the Oropharynx AJCC v6 - Stage IV Oropharyngeal Cancer AJCC v6 - Stage IV Oropharyngeal Throat Cancer - Stage IV Oropharynx Carcinoma AJCC v6 - stage IV oropharynx cancer