Table 1.
Characteristic of patient population (N = 9110)
| Characteristic | N (%) |
|---|---|
| Median age(range) | 55 (10–95) |
| Gender | |
| Male | 6416 (70.4) |
| Female | 2694 (29.6) |
| Location | |
| Left | 4406 (48.4) |
| Right | 4686 (51.4) |
| Bilateral | 18 (0.2) |
| Site | |
| One site | 8923 (97.9) |
| Two sites | 157 (1.7) |
| Multiple sites | 30 (0.4) |
| Surgical approach | |
| Radical nephrectomy | 4359 (47.8) |
| Partial nephrectomy | 4751 (52.2) |
| Pathological classification | |
| ccRCC | 7979 (87.6) |
| chRCC | 468 (5.1) |
| pRCC | 334 (3.7) |
| TFE-3 related RCC | 79 (0.87) |
| Unclassified RCC | 65 (0.7) |
| ccpRCC | 21 (0.02) |
| Others | 164 (1.8) |
| pT stage | |
| pT1 | 7250 (79.6) |
| pT2 | 355 (3.9) |
| pT3 | 1366 (15.0) |
| pT4 | 30 (0.3) |
| pTx | 109 (1.2) |
| cT stage | |
| cT1a | 4851 (53.3) |
| cT1b | 2407 (26.4) |
| cT2 | 597 (6.6) |
| cT3a | 977 (10.6) |
| cT3b | 217 (2.4) |
| cT3c | 25 (0.3) |
| cT4 | 36 (0.4) |
| G grade | |
| G1 | 4330 (47.5) |
| G2 | 3468 (38.1) |
| G3 | 706 (7.7) |
| G4 | 60 (0.7) |
| Gx | 546 (6.0) |
| Sarcomatoid differentiation | |
| Yes | 202 (2.2) |
| No | 8908 (97.8) |
| Necrosis | |
| Yes | 1175 (12.9) |
| No | 7935 (87.1) |
| Venous tumor thrombus | |
| Yes | 182 (2.0) |
| No | 8928 (98.0) |
* ccRCC, clear cell renal cell carcinoma; chRCC, chromophobe renal cell carcinoma; pRCC, papillary renal cell carcinoma; ccpRCC, clear cell papillary renal cell carcinoma; pT stage, pathological T stage; cT stage, clinical T stage