Cutaneous T cell malignant lymphoma can be classified and staged using the TNM classification system.
TNM |
Code |
Description |
T |
T1 |
limited lesions covering < 10% skin surface, without tumors |
|
T2 |
more generalized lesions covering >= 10% of the skin surface, without tumors |
|
T3 |
one or more tumors |
|
T4 |
generalized erythroderma |
N |
N0 |
no palpable lymph nodes, negative for T cell lymphoma on histology |
|
N1 |
palpable peripheral lymph nodes, negative for T cell lymphoma on histology |
|
N2 |
no palpable lymph nodes, but histology positive for T cell lymphoma |
|
N3 |
palpable lymph nodes, with histology positive for T cell lymphoma |
M |
M0 |
no involvement of visceral organs |
|
M1 |
involvement of visceral organs |
Stage |
TNM Classification |
Ia |
T1 N0 M0 |
Ib |
T2 N0 M0 |
IIa |
T1 N1 M0 T2 N1 M0 |
IIb |
T3 N0 M0 T3 N1 M0 |
III |
T4 N0 M0 T4 N1 M0 |
IVa |
any T, N2 M0 any T, N3 M0 |
IVb |
any T, any N, M1 |
Specialty: Hematology Oncology, Dermatology
ICD-10: ,