Bowel Obstruction and Hydronephrosis Due to an Over-the-Scope Clip.

An over-the-scope clip is a type of endoscopically placed clip used to treat gastrointestinal perforation, bleeding, or fistula. After the defect heals, the clip usually passes uneventfully through the gastrointestinal tract. An uncommon complication of over-the-scope clip placement is intestinal obstruction caused by luminal stenosis at the site of clip placement. Intestinal obstruction can rarely cause other downstream complications such as hydronephrosis from extrinsic compression of the urinary tract. We report a rare case of bilateral hydronephrosis caused by bowel obstruction from a migrated endoscopically placed clip.