Table 2.
Pathological features of patients.
| RV | IVC level I | IVC level II | IVC level III | p | |
|---|---|---|---|---|---|
| Tumor size (cm) | 0.499 | ||||
| Average | 8.9 ± 2.8 | 8.5 ± 2.8 | 9.1 ± 2.9 | 9.6 ± 3.2 | |
| Perinephric fat invasion | 0.096 | ||||
| Yes | 54 | 21 | 10 | 1 | |
| No | 39 | 28 | 11 | 5 | |
| Adrenal gland invasion | 0.161 | ||||
| Yes | 8 | 0 | 2 | 0 | |
| No | 85 | 49 | 19 | 6 | |
| Number of N classifications | 0.849 | ||||
| 0 | 82 | 42 | 17 | 5 | |
| 1 | 11 | 7 | 4 | 1 | |
| Number of M classifications | 0.132 | ||||
| 0 | 69 | 42 | 16 | 6 | |
| 1 | 24 | 7 | 5 | 0 | |
| Histological subtype | 0.446 | ||||
| Clear cell | 87 | 41 | 16 | 6 | |
| Papillary | 4 | 3 | 3 | 0 | |
| Chromophobe | 1 | 2 | 1 | 0 | |
| Collecting duct | 0 | 2 | 1 | 0 | |
| Unclassified | 1 | 1 | 0 | 0 | |
| Sarcomatoid | 0.942 | ||||
| Yes | 23 | 12 | 6 | 1 | |
| No | 70 | 37 | 15 | 5 | |
| Fuhrman grade | 0.613 | ||||
| G2 | 36 | 15 | 6 | 3 | |
| G3 | 53 | 31 | 12 | 3 | |
| G4 | 4 | 3 | 3 | 0 |