Objective: In this study, we aimed to present the results of patients who underwent retrograde intrarenal surgery (RIRS) for kidney stones in our clinic.

Material and Method: Demographic data of the patients to whom RIRS was performed in Pediatric Surgery-Pediatric Urology clinic of Dicle University between 2015-2016 was evaluated retrospectively and outcomes were analyzed. Size of the stone was mentioned as the longest measure calculated in one dimension through with ultrasonography and direct urinary system graphy. The RIRS procedure was performed by a flexible urete-roscope through the urethral sheath under general anesthesia, and the stones were fractured with a holmium laser. While relatively large stones were taken out with the help of forceps, small pieces were left to be thrown naturally.

Results: RIRS was applied to 10 patients with an average age of 8 years (2-12). Seven (70%) of the patients were male and 3 (30%) were female. The stones were located in the right half of the patients and in the left kidney. In the history of patients; 4 (60%) patients had performed Extracorporeal Shock Wave Lithotripsy and 2 patients had performed percutaneous nephrolithotomy. The stones were located in the lower calyx in 7 patients, in the pelvis in 2 patients and in the middle calyx in 1 patient. Average size of the stones were 9,7 mm (7-12 mm). Seven (70%) patients underwent passive dilatation before RIRS. Sheath was used in 7 (70%) patients during RIRS. Duration of the procedure was 54 (46-83) minutes in average. Hematuria improved by conservative treatment was observed in two (20%) patients. The stone-free rate was 90% for one session and in one patient it was 100% stone-free with second RIRS.

Conclusion: We believe that RIRS is a reliable endourologic option with a high achievement rate, shorter hospitalization period and low complication rate in selected childhood patients.