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Introduction: The left kidney is often preferred for living donor kidney transplantation because of its anatomical advantages. However, the right kidney may be procured due to donor conditions. Few studies have assessed the safety and graft outcome of right retroperitoneal laparoscopic donor nephrectomy (RDN). This study aimed to compare the outcomes between right and left RDN with respect to donor outcome and the graft function of recipients. Methods: This retrospective study included 230 consecutive living donor kidney transplants performed at our institution between May 2019 and March 2023. We reviewed the outcomes of kidney transplant in the right and left kidneys after RDN. Results: A total of 230 living donor kidney transplants were performed, with 32 donors receiving right RDN (right RDN group) and 198 donors receiving left RDN (left RDN group). The renal veins and ureters were significantly shorter in the right RDN group than in the left RDN group (both p <.001). Donor operation and warm ischemia time were significantly longer in the right RDN group than in the left RDN group (p =.012 and p <.001, respectively). None of the groups exhibited any cases of delayed graft function owing to donor‐related reasons. Perioperative changes in the estimated glomerular filtration rate of recipients and death‐censored graft survival were not significantly different between the two groups. Conclusions: In RDN, the outcomes of right donor nephrectomy were comparable to those of left donor nephrectomy in terms of donor safety and recipient renal function. [ABSTRACT FROM AUTHOR]

Introduction: We previously reported that the outcomes of pure retroperitoneoscopic donor nephrectomy are superior to those of hand‐assisted retroperitoneoscopic donor nephrectomy. Consequently, we introduced pure retroperitoneoscopic donor nephrectomy in our hospital. Here, we compared perioperative outcomes between hand‐assisted intra‐abdominal laparoscopic donor nephrectomy and pure retroperitoneoscopic donor nephrectomy. Methods: We retrospectively reviewed data from 315 living‐donor kidney transplantation procedures performed between October 2015 and December 2020 (213 involving hand‐assisted intra‐abdominal laparoscopic donor nephrectomy, October 2015 to June 2019; 102 involving pure retroperitoneoscopic donor nephrectomy, May 2019 to December 2020). After propensity score matching, 90 transplantations were included in each group (n = 180 overall). Results: Donors in the pure retroperitoneoscopic donor nephrectomy group had longer warm ischemia times (P <.001), lower serum C‐reactive protein concentrations and white blood cell counts on postoperative day 1 (P <.001 and P <.001, respectively), and shorter postoperative stays (P <.001) than donors in the hand‐assisted intra‐abdominal laparoscopic donor nephrectomy group. Five (5.6%) modified Clavien‐classifiable complications occurred in the hand‐assisted intra‐abdominal laparoscopic donor nephrectomy group; no complications occurred in the pure retroperitoneoscopic donor nephrectomy group (P = 0.008). One recipient in the hand‐assisted intra‐abdominal laparoscopic donor nephrectomy group had donor‐related delayed graft function. There were no significant differences between groups in recipient estimated glomerular filtration on postoperative day 7. Conclusion: The introduction of pure retroperitoneoscopic donor nephrectomy was safe and effective. Moreover, it was less invasive and less harmful for donors, compared with hand‐assisted intra‐abdominal laparoscopic donor nephrectomy; recipient outcomes were equivalent. [ABSTRACT FROM AUTHOR]