Table 1 Comparison of clinical and pathological data between patients with small renal masses who performed partial or radical nephrectomy
Variable Category | Partial Nephrectomy (n = 897) | Radical Nephrectomy (n = 461) | p Value * |
|---|---|---|---|
Year of the surgery | |||
Up to 2009 n (%) | 225 (48.5) | 239 (51.5) | < 0.001 |
Since 2010 n (%) | 637 (74.9) | 214 (25.1) | |
Age (years) | |||
Mean (SD) | 57.9 (12.7) | 61.2 (12.8) | < 0.001 |
Median (Q1 - Q3) | 59 (50–67) | 63 (53–71) | |
BMI (Body Mass Index) | |||
Mean (SD) | 27.6 (4.8) | 27.5 (4.9) | 0.661 |
Median (Q1 – Q3) | 26.9 (24.2–29.9) | 26.7 (24.2–30) | |
Blood Transfusion n (%) | 107 (12.6) | 43 (10.5) | 0.317 |
Serum Creatinine - mg/dL | |||
Baseline - Mean (SD) | 1.02 (0.61) | 1.23 (1.23) | 0.011 |
Median (Q1 – Q3) | 0.96 (0.86–1.1) | 1.0 (0.8–1.2) | |
Post-operative - Mean (SD) | 1.13 (0.51) | 1.50 (1.50) | 0.003 |
Median (Q1 – Q3) | 1.1 (0.9–1.3) | 1.3 (1.1–1.5) | |
Operation time – min | |||
Mean (SD) | 174.4 (76.6) | 197.3 (86.8) | < 0.001 |
Median (Q1 – Q3) | 120 (90–180) | 180 (120–240) | |
ECOG | |||
0–1 n (%) | 862 (96.1) | 437 (94.8) | 0.329 |
≥ 2 n (%) | 35 (3.9) | 24 (5.2) | |
Karnofsky | |||
≤ 80 n (%) | 74 (8.2) | 46 (10) | 0.336 |
> 80 n (%) | 823 (91.8) | 415 (90.0) | |
ASA classification | |||
1–2 n (%) | 767 (85.5) | 359 (77.9) | 0.001 |
≥ 3 n (%) | 130 (14.5) | 102 (22.1) | |
Renal tumor | |||
Exophytic tumor | 236 (62.8) | 140 (37.2) | < 0.001 |
Totally endophytic tumor | 19 (26.0) | 54 (74.0) | |
≤ 3 cm | 538 (74.8) | 181 (25.2) | < 0.001 |
3.1 - 4 cm | 261 (53.0) | 231 (47.0) | |
Extracapsular extension n (%) | |||
Yes | 51 (6.9) | 87 (20.8) | < 0.001 |
No | 686 (93.1) | 332 (79.2) | |
Surgical Margins n (%) | |||
Positive | 42 (4.7) | 7 (1.6) | 0.008 |
Negative | 844 (95.3) | 422 (98.4) | |
Nuclear grade | |||
Low grade n (%) | 685 (76.4) | 330 (71.6) | 0.064 |
High grade n (%) | 212 (23.6) | 131 (28.4) | |
Sarcomatoid component n (%) | |||
Yes | 2 (0.6) | 3 (1.2) | 0.654 |
No | 354 (99.4) | 253 (98.8) | |
Tumoral necrosis n (%) | |||
Yes | 104 (11.6) | 77 (16.7) | 0.011 |
No | 793 (88.4) | 384 (83.3) | |
Multifocality n (%) | |||
Yes | 41 (5.0) | 33 (7.7) | 0.070 |
No | 782 (95.0) | 395 (92.3) | |
Locoregional recurrence n (%) | |||
Yes | 19 (4.4%) | 26 (7.2%) | 0.126 |
No | 410 (95.6%) | 334 (92.8%) | |