Comparison of the efficacy and morbidity of flexible ureterorenoscopy for lower pole stones compared with other renal locations.

Background And Purpose: Flexible ureterorenoscopy (f-URS) for lower pole stones (LPS) compared with other renal locations can be challenging because of anatomic and technical considerations. We aimed to compare the stone-free rate (SFR) and surgical complication rate with f-URS for LPS vs other renal locations.

Patients And Methods: We performed a retrospective, single-center study including 371 f-URS for renal stone retrieval performed in our institution between January 2004 and December 2010.