Version May 2024
| Primary tumor (T) | |||
| T category | T criteria | ||
| TX | Primary tumor cannot be assessed | ||
| T0 | No evidence of primary tumor | ||
| T1 | Tumor ≤7 cm in greatest dimension, limited to the kidney | ||
| T1a | Tumor ≤4 cm in greatest dimension, limited to the kidney | ||
| T1b | Tumor >4 cm but ≤7 cm in greatest dimension, limited to the kidney | ||
| T2 | Tumor >7 cm in greatest dimension, limited to the kidney | ||
| T2a | Tumor >7 cm but ≤10 cm in greatest dimension, limited to the kidney | ||
| T2b | Tumor >10 cm, limited to the kidney | ||
| T3 | Tumor extends into major veins or perinephric tissues, but not into the ipsilateral adrenal gland and not beyond Gerota's fascia | ||
| T3a | Tumor extends into the renal vein or its segmental branches, or invades the pelvicalyceal system, or invades perirenal and/or renal sinus fat but not beyond Gerota's fascia | ||
| T3b | Tumor extends into the vena cava below the diaphragm | ||
| T3c | Tumor extends into the vena cava above the diaphragm or invades the wall of the vena cava | ||
| T4 | Tumor invades beyond Gerota's fascia (including contiguous extension into the ipsilateral adrenal gland) | ||
| Regional lymph nodes (N) | |||
| N category | N criteria | ||
| NX | Regional lymph nodes cannot be assessed | ||
| N0 | No regional lymph node metastasis | ||
| N1 | Metastasis in regional lymph node(s) | ||
| Distant metastasis (M) | |||
| M category | M criteria | ||
| M0 | No distant metastasis | ||
| M1 | Distant metastasis | ||
| Prognostic stage groups | |||
| When T is... | And N is... | And M is... | Then the stage group is... |
| T1 | N0 | M0 | I |
| T1 | N1 | M0 | III |
| T2 | N0 | M0 | II |
| T2 | N1 | M0 | III |
| T3 | NX, N0 | M0 | III |
| T3 | N1 | M0 | III |
| T4 | Any N | M0 | IV |
| Any T | Any N | M1 | IV |
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