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TNM staging of cutaneous T-cell lymphoma

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

  • T (skin)
    • T0 - clinically or histologically suspicious lesions
    • T1 - limited papules, patches, plaques covering < 10% of skin surface
    • T2 - generalised papules, patches, plaques covering > 10% of skin surface
    • T3 - tumours (1 or more)
    • T4 - erythroderma

  • N (lymph node)
    • N0 - no clinically abnormal lymph nodes
    • N1 - clinically abnormal peripheral lymph nodes
    • NP0 - biopsy performed, no CTCL
    • NP1 - biopsy performed, CTCL

  • M (visceral organs)
    • M0 - no visceral organ involvement
    • M1 - visceral organ involvement, confirmed pathologically

  • Staging classification of CTCL
    • Ia T1 N0/NP0 M0
    • Ib T2 N0/NP0 M0
    • IIa T1-2 N1/NP0 M0
    • IIb T3 N0/NP0 M0
    • III T4 N0/NP0 M0
    • IVa T1-4 N0-1/NP1 M0
    • IVb T1-4 N0-1/NP0-1 M1

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