Retrograde intrarenal surgery in atretic calyceal diverticular stone, a case report.

Renal calyceal diverticulum is congenital outpouchings of the renal calyx and communicate with the main collecting system via a narrow channel. Stones have reportedly been found in up to 50% of diverticulum. Surgical intervention is indicated for symptomatic stone. Stenotic infundibulum had been reported but seldom literature reported of calyceal diverticular atresia. Here we presented a case of atretic calyceal diverticular stone which successful managed by retrograde intrarenal surgery safely.