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We investigated the learning curve, pathological results and perioperative morbidity of laparoscopic partial nephrectomy (LPN). The records of all LPN cases at our institution between January 1999 and March 2004 were reviewed. Of 223 cases 217 (97.3%) were performed for an enhancing renal mass. Mean tumor size was 2.6 cm (range 1 to 10) and 95.4% of patients had a normal contralateral kidney...