Stage | Primary tumour thickness and ulceration | Lymph node status | Distant metastasis |
---|---|---|---|
Stage 0 | Tis | N0 | M0 |
Stage IA | T1a | N0 | M0 |
Stage IB | T1b | N0 | M0 |
 | T2a | N0 | M0 |
Stage IIA | T2b | N0 | M0 |
 | T3a | N0 | M0 |
Stage IIB | T3b | N0 | M0 |
 | T4a | N0 | M0 |
Stage IIC | T4b | N0 | M0 |
Stage IIIA | T1-4a | N1a | M0 |
 | T1-4a | N2a | M0 |
Stage IIIB | T1-4b | N1a | M0 |
 | T1-4b | N2a | M0 |
 | T1-4a | N1b | M0 |
 | T1-4a | N2b | M0 |
 | T1-4a | N2c | M0 |
Stage IIIC | T1-4b | N1b | M0 |
 | T1-4b | N2b | M0 |
 | T1-4b | N2c | M0 |
 | Any T | N3 | M0 |
Stage IV | Any T | Any N | M1a |
 | Any T | Any N | M1b |
 | Any T | Any N | M1c |