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To compare the efficacies of 3-dimensional laparoscopic partial nephrectomy and conventional laparoscopic partial nephrectomy for complex renal tumors. The complex renal tumors was defined as Preoperative Aspects and Dimensions Used for an anatomical (PADAU) ≥10, including some cT1b tumors.This was a retrospective analysis of patients with local complex renal tumors who presented to our hospital from January 2014 to January 2018. All patients were managed with laparoscopic partial nephrectomy (LPN) or 3-dimensional partial nephrectomy (3DLPN).There were 48 patients in the LPN group and 60 in the 3DLPN group. In the matched groups, demographic and tumor characteristics including Charlson Comorbidity Index, PADUA, based on the preoperative images, were similar. By contrast, 3DLPN achieved better results in terms of warm ischemia time (19 vs 27 minutes), operation time (105 vs 128 minutes), postoperative complications (14.9% vs 23.4%), and marginal width (0.6 cm vs 0.4 cm). We found statistically significant differences in terms of length of stay, estimated blood loss (EBL), positive surgical margin (PSM), and conversion to open or radical nephrectomy (RN). Median follow-up time was 17 and 18.5 months for the LPN and 3DLPN groups, respectively. The recovery of renal function (% change eGFR, 0 vs -8.7) was significantly different between the 3DLPN and LPN groups, whereas 12-month recurrence-free survival did not differ.Both 3-dimensional laparoscopic nephron-sparing nephrectomy and conventional laparoscopic partial nephrectomy are safe, effective, and acceptable approaches to treating complex renal tumors, while the former may facilitate tumor resection and renorrhaphy for challenging cases, offering a minimally invasive surgical option for patients who may otherwise require open surgery.

Comparison of 3-dimensional laparoscopy and conventional laparoscopy in the treatment of complex renal tumor with partial nephrectomy