Table 1.
Melanoma stage I and II (SLNB-) according to the AJCC classification system 8th Edition.
| Breslow thickness | Ulceration | T Category | N category | Stage |
|---|---|---|---|---|
| <0.8 mm | no | T1a | N0 | IA |
| <0.8 mm | yes | T1b | N0 | IB |
| 0.8–1.0 mm | Yes/no | T1b | N0 | IB |
| >1.0–2.0 mm | no | T2a | N0 | IB |
| >1.0–2.0 mm | yes | T2b | N0 | IIA |
| >2.0–4.0 mm | no | T3a | N0 | IIA |
| >2.0–4.0 mm | yes | T3b | N0 | IIB |
| >4.0 mm | no | T4a | N0 | IIB |
| >4.0 mm | yes | T4b | N0 | IIC |
Adapted from: Gershenwald JE, Scolyer RA, Hess KR, et al. Melanoma staging: evidence-based changes in the American Joint Committee on Cancer eighth edition cancer staging manual. CA Cancer J Clin. 2017; doi:10.3322/caac.21409.