Abstract:

Objective: The aim of this study was to assess our outcomes of semirigid ureterorenoscopy for management of renal pelvic stones and determine complications according to the modify Clavien classification retrospectively and discuss with literature. Material and Methods: Medical records of 23 patients who underwent semirigid ureteroscopy due to renal pelvic stones sized < 30 mm between 2014 and 2015 were retrospectively evaluated. Patients were investigated with regard to age, gender, stone size, history of previous shockwave lithotripsy and ureteral catheterization, stone clearance and complications. Holmium-Yag laser and/or pneumatic lithotripsy was used for lithotripsy. Patients assessed using non-contrast computed tomography at one month, postoperatively. Clinical success was defined as stone-free status or asymptomatic insignificant residual fragments (<4 mm). Complications were classified according to the modified Clavien classification. Results: Study population consisted of 11 female and 12 male patients with an average±SD age of 39.78 ± 19.48 years (3-76 years). The mean±SD stone size was 19.6 ± 5.76 mm (7-30 mm). The average stone-free rate was 78.3% after initial semirigid ureterorenoscopic lithotripsy. Success rates did not differ significantly with respect to stone size, gender and grade of hydronephrosis (p>0.05). Minor complications as classified by Clavien 1 (n:1) or 2 (n:2) occured in 3 (13%) patients. Grade 3, 4.5 complications were not determined in any patient. Semirigid ureterorenoscopic lithotripsy is an effective and safe procedure in the treatment of < 30 mm renal pelvic stones.  Prospective randomized controlled trials are needed to confirm these findings.

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