Table 1.
Comparison of the preoperative characteristics of 413 patients treated with retroperitoneal minimally invasive partial nephrectomy with selected matched 413 patients treated with transperitoneal minimally invasive partial nephrectomy for renal tumors within the RECORD 2 project
| RECORD 2 project—preoperative tumor and patient data | Surgical access | p value | |||
|---|---|---|---|---|---|
| Transpertioneal (n = 413) | Retroperitoneal (n = 413) | ||||
| Gender, n. % | |||||
| Male | 271 | 65.6% | 280 | 67.8% | 0.67 |
| Female | 142 | 34.4% | 133 | 32.2% | |
| Age (years), median IQR | 64.8 | 56.2–72.4 | 64.6 | 55.9–72.3 | 0.71 |
| BMI, median IQR | 25.9 | 23.9–28.7 | 25.8 | 23.7–28.4 | 0.95 |
| ECOG score, n. % | |||||
| 0 | 311 | 75.3% | 315 | 76.3% | 0.69 |
| ≥ 1 | 92 | 24.6% | 98 | 23.7% | |
| CCI score, median IQR | 1 | 0–2 | 1 | 0–2 | 0.71 |
| ASA PS score, median IQR | 2 | 2–3 | 2 | 2–3 | 0.82 |
| Indication, n. % | |||||
| Elective | 312 | 75.5% | 287 | 69.6% | 0.24 |
| Relative | 86 | 20.8% | 103 | 24.9% | |
| Absolute | 19 | 3.7% | 23 | 5.5% | |
| Clinical T, n. % | |||||
| T1a | 330 | 79.9% | 331 | 80.1% | 0.82 |
| T1b | 83 | 20.1% | 82 | 19.9% | |
| Tumor side, n. % | |||||
| Right | 202 | 48.9% | 194 | 47.0% | 0.93 |
| Left | 211 | 51.1% | 219 | 53.0% | |
| Clinical diameter, median IQR | 3.2 | 1.9–4.6 | 3.1 | 1.8–4.5 | 0.63 |
| Tumor site, n. % | |||||
| Mesorenal | 271 | 65.6% | 278 | 67.3% | 0.18 |
| Polar | 142 | 34.4% | 135 | 32.7% | |
| Tumor growth pattern, n. % | |||||
| ≥ 50% Exophytic | 229 | 55.4% | 240 | 58.1% | 0.41 |
| < 50% Exophytic | 160 | 38.7% | 147 | 35.6% | |
| Entirely endophytic | 24 | 5.8% | 26 | 6.3% | |
| PADUA Score, median IQR | 7.0 | 7.0–8.0 | 7.0 | 7.0–8.0 | 0.69 |
| PADUA complexity group, n. % | |||||
| Low (6–7) | 244 | 59.1% | 251 | 60.8% | 0.78 |
| Medium (8–9) | 155 | 37.5% | 146 | 35.4% | |
| High (≥ 10) | 14 | 3.4% | 16 | 3.9% | |
| Tumor localization, n. % | |||||
| Lateral margin | 139 | 33.7% | 143 | 34.6% | 0.26 |
| Medial margin | 49 | 11.8% | 46 | 11.3% | |
| Anterior face | 41 | 9.9% | 37 | 9.0% | |
| Posterior face | 183 | 44.3% | 187 | 45.0% | |
| Peri-hilar | 1 | 0.2% | 0 | 0% | |
| Preoperative hemoglobin, mean SD | 14.5 | 13.4–15.3 | 14.2 | 13.3–15.2 | 0.83 |
| Preoperative creatinine (mg/dl), mean SD | 0.9 | 0.80–1.00 | 0.9 | 0.80–1.10 | 0.19 |
| Preoperative eGFR, median IQR | 85.1 | 70.3–96.6 | 82.8 | 66.8–99.5 | 0.67 |