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Melanoma of the Skin Staging

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Question
Answer
TX   Primary tumor cannot be assessed (for example, curettaged or severely regressed melanoma)  
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TO   No evidence of primary tumor  
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Tis   Melanoma in situ  
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T1   Melanomas 1.0 mm or less in thickness, a: w/o ulceration and mitosis <1/mm2, b: with ulceration or mitoses ≥1/mm2  
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T2   Melanomas 1.01–2.0 mm, a: w/o ulceration, b: with ulceration  
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T3   Melanomas 2.01–4.0 mm, a: w/o ulceration, b: with ulceration  
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p4   Melanomas more than 4.0 mm, a: w/o ulceration, b: with ulceration  
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NX   Patients in whom the regional nodes cannot be assessed (for example, previously removed for another reason)  
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NO   No regional metastases detected  
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N1   1 node, a: micrometastasis1, b: macrometastasis2  
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N2   2-3 nodes, a: micrometastasis1, b: macrometastasis2, c: in transit met(s)/satellite(s) without metastatic nodes  
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N3   or more metastatic nodes, or matted nodes, or in transit met(s)/satellite(s) with metastatic node(s)  
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MO   No detectable evidence of distant metastases  
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M1a   Metastases to skin, subcutaneous, or distant lymph nodes  
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M1b   Metastases to lung  
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M1c   Metastases to all other visceral sites or distant metastases to any site combined with an elevated serum LDH  
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Created by: wallace263
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