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Evren Süer,Ömer Gülpinar,Cihat Özcan,Çağatay Göğüş,Seymur Kerimov,Mut Şafak 대한비뇨의학회 2015 Investigative and Clinical Urology Vol.56 No.2
Purpose: To evaluate the outcomes of rigid ureterorenoscopy (URS) for renal pelvic stones (RPS) sized 1 to 2 cm and to determinethe predictive factors for the requirement for flexible URS (F-URS) when rigid URS fails. Materials and Methods: A total of 88 patients were included into the study. In 48 patients, the RPS were totally fragmented withrigid URS and F-URS was not required (group 1). In 40 patients, rigid URS was not able to access the renal pelvis or fragmentationof the stones was not completed owing to stone position or displacement and F-URS was utilized for retrograde intrarenal surgery(RIRS) (group 2). The predictive factors for F-URS requirement during RIRS for RPS were evaluated. Both groups were compared regardingage, height, sex, body mass index, stone size, stone opacity, hydronephrosis, and previous treatments. Results: The mean patient age was 48.6±16.5 years and the mean follow-period was 39±11.5 weeks. The overall stone-free rate inthe study population was 85% (75 patients). In groups 1 and 2, the overall stone-free rates were 83% (40 patients) and 87% (35 patients),respectively (p>0.05). The independent predictors of requirement for F-URS during RIRS were male gender, patient height,and higher degree of hydronephrosis. Conclusions: Rigid URS can be utilized in selected patients for the fragmentation of RPS sized 1 to 2 cm with outcomes similar tothat of F-URS. In case of failure of rigid URS, F-URS can be performed successfully in this group of patients.
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