Novel endoscopic management of buried bumper syndrome in percutaneous endoscopic gastrostomy: The Olympus HookKnife

Buried bumper syndrome (BBS) is an uncommon but serious complication of percutaneous endoscopic ga-strostomy. It involves the internal fixation device, or “bumper”, migrating into the gastric wall and subsequent mucosal overgrowth. We described a case series of four patients with BBS treated with a novel endoscopic technique using a HookKnife between June 2016 and February 2017. The HookKnife is a rotating L-shaped cutting wire designed for hooking tissue and pulling it away from the gastric wall towards the lumen. The technique was successful in all four cases with no complications. Each patient was discharged on the day of treatment. The HookKnife is a manoeuvrable, safe and effective device for endoscopic removal of buried bumpers and could avoid surgery in a high risk group of patients. To our knowledge this technique has not been described previously. We suggest that this technique should be added to the treatment algorithms for managing BBS.