Table 1 Clinicopathological characteristics of patients with RCC.
RCC with collateral vessels (n = 110) | RCC without collateral vessels (n = 126) | P value | |
|---|---|---|---|
Age, mean ± SD, years | 55.0 ± 13.1 | 55.0 ± 12.9 | 0.960 |
Gender (female) | 43 (39.1%) | 45 (35.7%) | 0.686 |
Pathologic T stage | < 0.001 | ||
T1a | 29 (26.4%) | 78 (61.9%) | |
T1b | 42 (38.2%) | 35 (27.8%) | |
T2a | 14 (12.7%) | 7 (5.5%) | |
T2b | 6 (5.5%) | 0 (0.0%) | |
T3a | 14 (12.7%) | 3 (2.4%) | |
T3b | 3 (2.7%) | 0 (0.0%) | |
T4 | 2 (1.8%) | 3 (2.4%) | |
T stage upgrading | 14 (12.7%) | 18 (14.3%) | 0.874 |
Histologic patterns | 0.652 | ||
Clear cell | 94 (85.4%) | 104 (82.5%) | |
Papillary | 6 (5.5%) | 11 (8.7%) | |
Chromophobe | 8 (7.3%) | 7 (5.6%) | |
Others | 2 (1.8%) | 4 (3.2%) | |
Fuhrman grading | 0.038 | ||
1–2 | 53 (48.2%) | 75 (59.5%) | |
3–4 | 48 (43.6%) | 38 (30.2%) | |
Undefined | 9 (8.2%) | 13 (10.3%) | |
Necrosis | 17 (15.5%) | 5 (4.0%) | 0.003 |
Perirenal fat invasion | 7 (6.4%) | 3 (2.4%) | 0.117 |
