Table 1.
Clinicopathological features of cohort
| No. pT1/pT2 (%) | No. pT3a (%) | p Value | |
|---|---|---|---|
| Gender: | |||
| F | 505 (34) | 102 (31) | 0.3 |
| M | 978 (66) | 224 (69) | |
| Race: | |||
| White | 1,298 (88) | 276 (85) | 0.023 |
| Black | 89 (6.0) | 12 (3.7) | |
| Asian | 52 (3.5) | 21 (6.4) | |
| Other | 21 (1.4) | 7 (2.1) | |
| Unknown | 23 (1.6) | 10 (3.1) | |
| Surgical approach: | |||
| Open radical nephrectomy | 134 (9.0) | 146 (45) | <0.0001 |
| Open partial nephrectomy | 947 (64) | 120 (37) | |
| Laparoscopic partial nephrectomy | 367 (25) | 35 (11) | |
| Laparoscopic radical nephrectomy | 35 (2.4) | 25 (7.7) | |
| Size of primary lesion (cm): | <0.0001 | ||
| 4 or Less | 1,053 (71) | 91 (28) | |
| Greater than 4 to 7 | 336 (23) | 122 (37) | |
| Greater than 7 to 10 | 59 (4.0) | 69 (21) | |
| Greater than 10 | 35 (2.4) | 44 (13) | |
| Tumor histology: | |||
| Chromophobe | 165 (11) | 35 (11) | <0.0001 |
| Clear cell | 908 (61) | 242 (74) | |
| Other | 169 (11) | 34 (10) | |
| Papillary | 241 (16) | 15 (4.6) | |
| Type of invasion:* | |||
| Renal vein | – | 66 (20) | |
| PN | – | 107 (33) | |
| Muscular branch | – | 94 (29) | |
| Renal SF | – | 137 (42) | |
*
There were 71 patients with more than 1 type of feature present.