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Melanoma Staging
Melanoma of the Skin Staging
Question | Answer |
---|---|
TX | Primary tumor cannot be assessed (for example, curettaged or severely regressed melanoma) |
TO | No evidence of primary tumor |
Tis | Melanoma in situ |
T1 | Melanomas 1.0 mm or less in thickness, a: w/o ulceration and mitosis <1/mm2, b: with ulceration or mitoses ≥1/mm2 |
T2 | Melanomas 1.01–2.0 mm, a: w/o ulceration, b: with ulceration |
T3 | Melanomas 2.01–4.0 mm, a: w/o ulceration, b: with ulceration |
p4 | Melanomas more than 4.0 mm, a: w/o ulceration, b: with ulceration |
NX | Patients in whom the regional nodes cannot be assessed (for example, previously removed for another reason) |
NO | No regional metastases detected |
N1 | 1 node, a: micrometastasis1, b: macrometastasis2 |
N2 | 2-3 nodes, a: micrometastasis1, b: macrometastasis2, c: in transit met(s)/satellite(s) without metastatic nodes |
N3 | or more metastatic nodes, or matted nodes, or in transit met(s)/satellite(s) with metastatic node(s) |
MO | No detectable evidence of distant metastases |
M1a | Metastases to skin, subcutaneous, or distant lymph nodes |
M1b | Metastases to lung |
M1c | Metastases to all other visceral sites or distant metastases to any site combined with an elevated serum LDH |