Abstract Objective: To compare and analyze surgical and functional outcomes of transperitoneal robotic partial nephrectomy (TRPN) and retroperitoneal robotic partial nephrectomy (RRPN) in localized renal tumors, including ≥4 cm renal masses. Methods: Of 566 consecutive patients who underwent robotic partial nephrectomy by a single surgeon from December 2008 through July 2017,...