Objective To investigate the applicative value of three-dimensional angiography in the evaluation of renal artery variation before robotic-assisted laparoscopic partial nephrectomy(RALPN)and its significance.Methods The clinical data of 284 RALPN cases examined by computed tomographic angiography(CTA)during June 2013 and March 2017 were retrospectively analyzed.All patients were diagnosed as renal tumor by ultrasonography or CT before operation.The patients' general information was recorded and the variatio...