Version May 2024
| Primary tumor (T) | |
| T category | T criteria |
| TX | Primary tumor cannot be assessed |
| T1 | Organ confined |
| T2 | Tumor extension into tissue beyond organ |
| T2a | Invades serosa or visceral peritoneum |
| T2b | Extension beyond serosa (mesentery) |
| T3 | Invades another organ |
| T4 | Multifocal involvement |
| T4a | Multifocal (two sites) |
| T4b | Multifocal (three to five sites) |
| T4c | Multifocal (>5 sites) |
| Regional lymph nodes (N) | |
| N category | N criteria |
| N0 | No lymph node involvement or unknown lymph node status |
| N1 | Lymph node involvement present |
| Distant metastasis (M) | |
| M category | M criteria |
| M0 | No metastases |
| M1 | Metastases present |
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