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Anatomic Stage/Prognostic Groupsa
| Stage | T | N | M |
|---|---|---|---|
| 0 | Tis | N0 | M0 |
| I | T1 | N0 | M0 |
| II | T2 | N0 | M0 |
| T3 | N0 | M0 | |
| IIIA | T1 | N1 | M0 |
| T2 | N1 | M0 | |
| T3 | N1 | M0 | |
| T4 | N0 | M0 | |
| IIIB | T4 | N1 | M0 |
| Any T | N2 | M0 | |
| Any T | N3 | M0 | |
| IV | Any T | Any N | M1 |
Reprinted with permission from AJCC: Anus. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 165
