Staging system for MF and SS
Stage . | Tumor . | Lymph node . | Metastases . |
|---|---|---|---|
| IA | T1 | NO | M0 |
| IB | T2 | N0 | M0 |
| IIA | T1 or T2 | N1 | M0 |
| IIB | T3 | N0 or N1 | M0 |
| III | T4 | N0 or N1 | M0 |
| IVA | T1-T4 | N2 or N3 | M0 |
| IVB | T1-T4 | N0-N3 | M1 |
Stage . | Tumor . | Lymph node . | Metastases . |
|---|---|---|---|
| IA | T1 | NO | M0 |
| IB | T2 | N0 | M0 |
| IIA | T1 or T2 | N1 | M0 |
| IIB | T3 | N0 or N1 | M0 |
| III | T4 | N0 or N1 | M0 |
| IVA | T1-T4 | N2 or N3 | M0 |
| IVB | T1-T4 | N0-N3 | M1 |
T1 indicates patch/plaque = 10% of body surface; T2, patch/plaque = 10% of body surface; T3, skin tumor(s); T4, erythroderma; N0, normal nodes; N1, palpable nodes without histologic evidence of lymphoma; N2, no palpable nodes but histologic evidence of lymphoma; N3, palpable nodes with histologic evidence of lymphoma; M0, no visceral involvement; M1, histologically confirmed visceral involvement. This staging system was devised by Bunn and Lamberg in 1979.32