Table 7.
Assignment of stage based on T, N, and M category: clinical stage group.
| When T is… | And N is… | And M is… | Then the clinical stage group is… |
|---|---|---|---|
|
| |||
| Tis | N0 | M0 | 0 |
| T1a | N0 | M0 | IA |
| T1b | N0 | M0 | IB |
| T2a | N0 | M0 | IB |
| T2b | N0 | M0 | IIA |
| T3a | N0 | M0 | IIA |
| T3b | N0 | M0 | IIB |
| T4a | N0 | M0 | IIC |
| ANY T, TIS | ≥N1 | M0 | III |
| ANY T | ANY N | M1 | IV |
With permission from Gershenwald JE, Scolyer RA, Hess KR, et al. Melanoma of the skin. In: Amin MB, Edge SB, Greene FL, et al, eds. AJCC Cancer Staging Manual 8th ed. Springer International Publishing; 2017:563–585.