Table 1. The clinical and pathological characteristics of patients who had PN or RN, stratified by presence of bilateral synchronous disease at presentation.
| Median (IQR) or n (%) characteristic | URT | Synchronous BRT (at 1st procedure) 1st/2nd |
|---|---|---|
| No. of patients | 2704 | 73 |
| Age | 62 (53, 70) | 62 (55, 69) |
| Male | 1719 (64) | 64 (88) |
| African-American | 133 (5) | 8 (11) |
| Preoperative: | ||
| Creatinine*, mg/dL | 1.1 (0.9, 1.3) | 1.2 (1.0, 1.4) |
| eGFR†, mL/min/1.73 m2 | 67 (57, 78) | 69 (55, 79) |
| Max tumour size, cm | 4.1 (2.7, 7.0) | 4.0 (3.0, 6.0)/3.1 (2.1, 4.5) |
| pT stage (RCC only) | ||
| T1a | 1028 (43) | 31 (47)/40 (63) |
| T1b | 471 (19) | 15 (23)/7 (11) |
| T2 | 224 (9) | 4 (6)/6 (10) |
| T3a | 412 (17) | 9 (14)/6 (10) |
| T3b | 233 (10) | 3 (5)/3 (5) |
| T3c | 5 (0.2) | 1 (2)/0 |
| T4 | 24 (1) | 0/0 |
| T (unknown) | 21 (1) | 3 (5)/1 (2) |
| Histology | ||
| Conventional (clear cell) | 1736 (64) | 41 (56)/35 (48) |
| Papillary | 343 (13) | 19 (26)/22 (30) |
| Chromophobe | 258 (10) | 4 (5)/3 (4) |
| Collecting duct | 7 (0.3) | 1 (1)/0 |
| RCC unclassified | 74 (3) | 1 (1)/3 (4) |
| Oncocytoma | 245 (9) | 7 (10)/7 (10) |
| Angiomyolipoma | 40 (1) | 0/0/ |
| Adenoma | 1 (0.04) | 0/0 |
| Type of procedure | ||
| PN | 1102 (41) | 42 (58)/60 (82) |
| RN | 1602 (59) | 31 (42)/13 (18) |
*
Preoperative creatinine available for 2642 URT and 66 BRT patients;
†
eGFR available for 2613 URT and 66 BRT patients.