| Tx | Primary tumor cannot be assessed |
| T0 | No evidence of residual tumor |
| Ta | Superficial non invasive papillary carcinoma |
| Tis | Superficial flat tumor (carcinoma in situ) |
| T1 | Invasion of subepithelial connective tissue (lamina propria) |
| T2a | Superficial invasion of muscularis mucosa (into inner half) |
| T2b | Deep invasion of muscularis mucosa (into outer half) |
| T3a | Microscopic perivesical spread |
| T3b | Macroscopic perivesical spread |
| T4a | Invasion of adjacent organs (prostate, seminal vesicles, uterus or vagina) |
| T4b | Invasion of pelvic side wall or abdominal wall |
| Nx | Regional lymph nodes not assessed |
| N0 | No lymph node involvement |
| N1 | One affected lymph node in true pelvis |
| N2 | More than one affected true pelvic lymph node |
| N3 | Common iliac lymph node involvement |
| Mx | Distant metastasis cannot be assessed |
| M0 | No distant metastases |
| M1 | Distant metastases |
