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TNM and Stage Groupings > Mucosal Melanoma of the Head and Neck
Mucosal Melanoma of the Head and Neck
Primary Tumor (T)
| T Category |
Stage Category Definitions |
| T3 |
Mucosal disease |
| T4a |
Moderately advanced disease
Tumor involving deep soft tissue, cartilage, bone, or overlying skin. |
| T4b |
Very advanced disease
Tumor 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)
| N Category |
Stage Category Definitions |
| NX |
Regional lymph nodes cannot be assessed |
| N0 |
No regional lymph node metastasis |
| N1 |
Regional lymph node metastasis present |
Distant Metastasis (M)
| M Category |
Stage Category Definitions |
| M1 |
Distant metastasis |
No distant metastasis (no pathologic M0; use clinical M to complete stage group)
Anatomic Stage/Prognostic Groups
| Stage |
T |
N |
M |
| III |
T3 |
N0 |
M0 |
| IVA |
T4a |
N0 |
M0 |
| IVA |
T3-T4a |
N1 |
M0 |
| IVB |
T4b |
Any N |
M0 |
| IVC |
Any T |
Any N |
M1 |
