Stones in A Congenital Ureteric Diverticulum.

True ureteral diverticula are rare, may be found incidentally, or form after urinary sepsis, stones, or obstruction. Stone formation is an uncommon complication because of urine stasis or recurrent infections. Radiological opacities suggestive of a stone in an extra-anatomical site of the ureter should raise the suspicion of a ureteric diverticulum. Although a congenital ureteric diverticulum is believed to be formed because of an abortive ureteric bud, its anatomy could be completely different from that of a duplex ureter. The presence of complications requires diverticulectomy with or without reconstruction of the ureteric defect. [ABSTRACT FROM AUTHOR]