Primary tumor (T) | |||
T category | T criteria | ||
TX | Primary tumor cannot be assessed | ||
T0 | No evidence of primary tumor | ||
Ta | Papillary noninvasive carcinoma | ||
Tis | Carcinoma in situ | ||
T1 | Tumor invades subepithelial connective tissue | ||
T2 | Tumor invades the muscularis | ||
T3 | For renal pelvis only: Tumor invades beyond muscularis into peripelvic fat or into the renal parenchyma. For ureter only: Tumor invades beyond muscularis into periureteric fat. | ||
T4 | Tumor invades adjacent organs, or through the kidney into the perinephric fat | ||
Regional lymph nodes (N) | |||
N category | N criteria | ||
NX | Regional lymph nodes cannot be assessed | ||
N0 | No regional lymph node metastasis | ||
N1 | Metastasis ≤2 cm in greatest dimension, in a single lymph node | ||
N2 | Metastasis >2 cm, in a single lymph node; or multiple lymph nodes | ||
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... |
Ta | N0 | M0 | 0a |
Tis | N0 | M0 | 0is |
T1 | N0 | M0 | I |
T2 | N0 | M0 | II |
T3 | N0 | M0 | III |
T4 | NX, N0 | M0 | IV |
Any T | N1 | M0 | IV |
Any T | N2 | M0 | IV |
Any T | Any N | M1 | IV |
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