Table 2 Perioperative data and postoperative pathological data of patients undergoing pure retroperitoneal laparoscopic radical nephrectomy and thrombectomy with delayed occlusion of the proximal inferior vena cava (DOPI) technique

IVC resection, n

3

Operative time, min, mean ± SD (range)

345.9 ± 182.9 (240–464)

Estimated blood loss, ml, mean ± SD (range)

466.7 ± 245.5 (200–1000)

Intraoperative transfusion of red blood cells, ml, mean ± SD (range) (n = 8)

1200.0 ± 1054.2 (400–3100)

Intraoperative transfusion of plasma, ml, mean ± SD (range) (n = 4)

475 ± 82.9 (400–600)

Postoperative hospital stay, day, ml, mean ± SD (range)

9.3 ± 4.2 (5–19)

Postoperative complications, n

3

Preoperative serum creatinine, μmol/L, mean ± SD (range)

88.5 ± 29.4 (48–117)

Serum creatinine 1 week after surgery, μmol/L, mean ± SD (range)

107.2 ± 64.9 (67–323)

 Clear cell RCC

12

 Ewing sarcoma

1

 Papillary RCC

1

 Chromophobe RCC

1

 Urothelial carcinoma

1

 Angiomyolipoma

1

 Follow-up time, mo, median (range)

21 (6–41)