Stenting versus non-stenting after non-complicated ureteroscopic manipulation of stones in bilharzial ureters.

Background: Stents were used routinely after ureteroscopy to prevent postoperative ureteral obstruction. However, because of the recognized complications of stents, non-stenting is the new trend after uncomplicated ureteroscopy. The wall of the bilharzial ureter is characteristically thick and may be calcified.