Robotic Partial Nephrectomy for Completely Endophytic Renal Tumors: Complications and Functional and Oncologic Outcomes During a 4-Year Median Period of Follow-up

Objective To evaluate the renal functional outcome, the oncologic safety, and the occurrence of complications after robotic-assisted laparoscopic partial nephrectomy (RPN) for completely endophytic tumors. Material and Methods Data of 45 patients with completely endophytic tumors, 116 patients with mesophytic, and 64 patients with exophytic masses who underwent RPN were retrospectively analyzed. Perioperative, oncologic, and functional data were evaluated and analyzed with SPSS, version 18. Results Demographic characteristics were similar among the groups. The median follow-up of the endophytic, the mesophytic, and the exophytic groups were 48, 43, and 38 months, respectively. Endophytic masses were more likely to be malignant and have a higher overall tumor complexity, estimated by the RENAL score (9 vs 8 vs 5.5; P