TNM staging of cutaneous T-cell lymphoma
Last reviewed 01/2018
- 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