Perioperative Outcomes of Robotic and Open Partial Nephrectomy for Moderately and Highly Complex Renal Lesions

Purpose: We compared outcomes in patients undergoing robotic vs open partial nephrectomy stratified by moderately and highly complex tumor nephrometry scores.Materials and Methods: Patients treated with partial nephrectomy from 2007 to 2010 were grouped by tumor characteristics into low—nephrotomy score 4 to 6, moderate—7 to 9 and high—10 to 12 anatomical complexity cohorts. Lesions with low complexity were excluded from study. Demographic, surgical and pathological outcomes were compared between patients undergoing robotic vs open partial nephrectomy in the moderately and highly complex cohorts.Results: A total of 281 patients, of whom 63.3% were male, with a mean ± SD age of 58.1 ± 11.7 years and a mean followup of 21.3 ± 16.3 months underwent partial nephrectomy. Moderately complex lesions were noted in 81 robotic and 136 open partial nephrectomy cases with a mean tumor size of 3.8 ± 2.2 cm. Highly complex lesions were noted in 10 robotic and 54 open partial nephrectomy cases with a mean tumor size of ...