Head and Neck Mucosal Melanoma pT4b TNM Finding v7

**Semantic type:** Finding

**Definition:** Mucosal melanoma of the head and neck with very advanced disease. Tumor involves brain, dura, skull base, lower cranial nerves (IX, X, XI, XII), masticator space, carotid artery, prevertebral space, or mediastinal structures. (from AJCC 7th Ed.)

**Synonyms:** - Mucosal Melanoma of the Head and Neck pT4b TNM Finding v7