Table 1.

Mucosal Melanoma of the Head and Neck Staging update 05 June 2018.

(American joint committee on cancer: cancer stage).

Tumor, T
There is no T1 or T2 in mucosal melanoma. •T3: Tumors limited to the mucosa and immediately underlying soft tissue, regardless of thickness or greatest dimension; for example, polypoid nasal disease, pigmented or non-pigmented lesions of the oral cavity, pharynx, or larynx •T4: Moderately advanced or very advanced •T4a: Moderately advanced disease. Tumor involving deep soft tissue, cartilage, bone, or overlying skin •T4b: Very advanced disease. Tumor involving the brain, dura, skull base, lower cranial nerves (IX, X, XI, XII), masticator space, carotid artery, prevertebral space, or mediastinal structures
Lymph Nodes, N
•NX: Regional lymph nodes cannot be assessed •N0: No regional lymph node metastases •N1: Regional lymph node metastases present
Distant Metastases, M
•M0: No distance metastasis •M1: Distant metastasis