Underwater endoscopic mucosal resection using a detachable snare for a pedunculated lesion located in the greater curvature of the upper gastric body.

The usefulness of underwater endoscopic mucosal resection (UEMR) has been shown for colorectal and duodenal lesions [1] [2] as well as gastric lesions, especially those located in the greater curvature of the gastric body [3] [4]. As it is difficult to approach and dissect such gastric lesions using endoscopic submucosal dissection, UEMR is sometimes chosen as an alternative treatment.