• Basri Cakiroglu, Tuncay Tas, Suleyman Hilmi Aksoy, and Ersan Arda.
• Department of Urology, Hisar Intercontinental Hospital, Istanbul Galata University, Istanbul, Turkey.
• J Coll Physicians Surg Pak. 2022 May 1; 32 (5): 623-626.

ObjectiveTo evaluate the efficacy of retrograde intrarenal surgery (RIRS) and holmium laser lithotripsy in the treatment of symptomatic renal calyceal diverticular (CD) stones.Study DesignA case series.Place And Duration Of StudyDepartment of Urology, Hisar Intercontinental Hospital, from 2008 and 2019.MethodologyPatients who underwent holmium laser lithotripsy with RIRS to manage symptomatic CD stones were evaluated retrospectively. Demographics, stone size, operation and hospital stay duration, the success of treatment and complications were noted.ResultAmong the 30 treated patients, 13 patients were female and 17 were male. The mean age was 45.4 ± 11.9 (26-64), the stone diameter was 14.4 ± 4.1 mm, operation time was 70.47±35.7 (35-155) minutes, and mean length of hospital stay was 1.27±0.5 (1-3) days. In those patients who underwent RIRS, 26 (86.7%) were successfully treated while in 4 of 30 patients (13.3%) the procedure was not successful. Complications were observed in 10 (33.3%) patients. Clavien-I complications were demonstrated in 6 patients, Clavien III complications were demonstrated in 3 patients. One patient had urosepsis, 2 patients had ureteral laceration, and one patient with Clavien IV complication had perirenal hematoma.ConclusionLaser lithotripsy therapy with RIRS is a safe and effective treatment for symptomatic calyceal diverticular stones and can be offered as the first-line treatment for calyceal diverticular stones.Key WordsCalyceal diverticula, Stone disease, Flexible ureterorenoscopy, Holmium laser, RIRS.

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