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Melanoma Staging

Melanoma of the Skin Staging

QuestionAnswer
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
Created by: wallace263