#1447

Management of complex Large renal masses (>70mm) by a single surgeon; Robotic and Laparoscopic partial nephrectomy

S. Miran^1,2, A. Hong³, H. Zargar^3,4,5

¹Monash University, Department of Surgery, Melbourne, Australia
²Alfred Health, Department of Urology, Melbourne, Australia
³University of Melbourne, Department of Surgery, Melbourne, Australia
⁴Western Health, Department of Urology, Melbourne, Australia
⁵Western Clinical Trials, Department of Urology, Melbourne, Australia

Introduction:

In this study, we retrospectively reviewed data analysing perioperative and postoperative outcomes in patients with a large renal mass >70mm. Trifecta and “Optimal outcome” were defined, and rates of achieving each were evaluated in patients undergoing either Robotic partial nephrectomy (RPN) or Laparoscopic partial nephrectomy (LPN).

Material and methods:

In total, 10 patients underwent partial nephrectomy by a single surgeon from 2019 to 2024. Trifecta was defined by three components: Warm Ischemia time (WIT)<25min, Zero postoperative copmplications, Negative surgical margin. Optimal outcome was defined as achieving trifecta and short-term (3 months) eGFR preservation of more than 90%. Postoperative complications were classified using the Clavien-Dindo system. Statistical analysis was carried out using GraphPad Prism V10.4.

Results:

10 patients met the inclusion criteria for this case series. The mean age was 61.70, and the average tumour size was 87.10mm. The mean warm ischemia time was 15.25 mins, and the median renal score was 11. Negative surgical margins were achieved in 88.89% of cases, no postoperative complications were recorded, and eGFR preservation >90% was achieved in 80% of the patients. The defined trifecta was met in 60% of cases while optimal outcome was achieved in 50%.