Is Retrograde Intrarenal Surgery with Semi-rigid Ureterorenoscope Feasible for Isolated Renal Pelvic Stones?

Abstract

Objective: We compared the success and complication rates of retrograde intrarenal surgery (RIRS) performed with semi-rigid ureterorenoscopy (srURS) or flexible ureterorenoscopy (fURS) for isolated renal pelvic stones. Materials and Methods: A total of 247 patients who underwent RIRS with fURS (n=179; group 1) or srURS (n=68; group 2) were included in this study. Various factors related to patients, stones and surgical procedures were evaluated retrospectively. Results: There was no difference between the patient groups according to mean age (49.12±1.10 years vs 49.59±1.60 years, p=0.745), gender distribution (p=0.152), mean hounsfield unit values (941±31.41 vs 1036±44.47 p=0.077), and mean hospitalization time (3.57±0.19 days vs 4.59±0.57, p=0.224). In group 1, the mean stone size (14.5±0.73 mm vs 15.5±0.62 mm, p=0.019) was statistically lower and the operative time (79.73±3.38 min vs 70.65±8.61, p=0.041) was statistically higher than those of group 2. The overall success rate in group 1 and group 2 was 93.9% and 63.6%, respectively (p