Table 1 Patients and tumors characteristics
Variable | Mean ± SD or median (interquartile range) or n (%) |
|---|---|
Age, year | 54.72 ± 11.48 |
Tumor diameter, cm | 5.94 ± 3.06 |
Gender | |
 Male | 505 (67.4) |
 Female | 244 (32.6) |
Tumor location | |
 Left kidney | 366 (48.9) |
 Right kidney | 383 (51.1) |
Hypertension | |
 No | 488 (65.2) |
 Yes | 261 (34.8) |
Diabetes | |
 No | 640 (85.4) |
 Yes | 109 (14.6) |
Smoking history | |
 No | 430 (57.4) |
 Yes | 319 (42.6) |
BMI | |
 < 25 | 507 (67.7) |
 ≥ 25 | 242 (32.3) |
Sugical approach | |
 Open | 321 (42.9) |
 Laparoscopic | 428 (57.1) |
Surgical modality | |
 Partial nephrectomy | 317 (42.3) |
 Radical nephrectomy | 432 (57.7) |
Tumor necrosis extent | |
 TN = 0% | 628 (83.8) |
 0% < TN < 20% | 57 (7.6) |
 TN ≥ 20% | 64 (8.5) |
Ki-67 index | |
 Ki-67 = 0% | 639 (85.3) |
 0% < Ki-67 < 10% | 66 (8.8) |
 Ki-67 ≥ 10% | 44 (5.9) |
Fuhrman grade | |
 I | 239 (31.9) |
 II | 324 (43.3) |
 III | 140 (18.7) |
 IV | 46 (6.1) |
pT classification | |
 1a | 229 (30.6) |
 1b | 270 (36.0) |
 2a | 130 (17.4) |
 2b | 120 (16.0) |
Tumor volume group | |
 V < 17 cm3 | 267 (35.6) |
 17cm3 ≤ V < 40 cm3 | 172 (23.0) |
 40cm3 ≤ V < 134 cm3 | 156 (20.8) |
 V ≥ 134 cm3 | 154 (20.6) |
 Median follow-up, mth | 118.0 (85–155) |
 Local relapse | 69 (9.2) |
 Metastatic progression | 128 (17.1) |
 Death from cancer | 196 (26.2) |
 Death | 261 (34.8) |