*Purpose: To present, in a video format, the technical considerations for performing a robotic partial nephrectomy in a transplanted kidney.

*Methods: Two patients underwent this procedure. Ports were placed in a W-shaped configuration with the camera port placed 4 fingerbreadths above the umbilicus, 2 robotic ports placed on the left side, and one robotic port and one 12 mm assistant port placed on the left side. After lysing the adhesion and dissecting the bowel and the female genital organs off the kidney, the psoas muscle was identified and followed medially to identify the common iliac artery which was then carefully dissected off the common iliac vein. Margins of the tumor were marked using intraoperative ultrasound. A Bulldog clamp (Scanlan, Saint Paul, MN, USA) was placed on the common iliac artery and the tumor was excised. Renorrhaphy was performed in 2 layers with early unclamping after suturing the deep layer. After retrieving the specimen and placing a drain, the robot was undocked and the 12 mm port site was closed.

*Results: Baseline characteristics and transplant history of patients have been summarized in table 1. The mass size was 7 and 2.2 cm in the first and second patients respectively. There were no intra- or postoperative complications. Margins were negative in both patients. Perioperative information of patients has been summarized in table 2.

*Conclusions: Robotic partial nephrectomy is feasible in transplanted kidneys. The proximal common iliac artery control is a safe alternative in patients who underwent a complex vascular reconstruction.

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