label: Stage IVB Head and Neck Mucosal Melanoma AJCC v7
label_lc: stage ivb head and neck mucosal melanoma ajcc v7
description: Stage IVB includes: T4b, Any N, M0.  T4b: 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.  M0: No distant metastasis. (AJCC 7th ed.)