Table 1 TNM Classification of Mucosal Melanoma of the Head and Neck
From: Extracutaneous melanomas: a primer for the radiologist
Primary tumour (T) T3: Mucosal disease T4a: Moderately advanced disease. Tumour involving deep soft tissue, cartilage, bone or overlying skin T4b: Very advanced disease. Tumour involving brain, dura, skull base, lower cranial nerves (IX, X, XI,XII), masticator space, carotid artery, prevertebral space or mediastinal structures Regional lymph nodes (N) NX: Regional lymph nodes cannot be assessed N0: No regional lymph node metastases N1: Regional lymph node metastases present Distant metastasis (M) M0: No distant metastasis M1: Distant metastasis present |