Abstract
A 50-year-old woman was underwent a endoscopic mucosal resection (EMR) for a submucosal tumor, 8 mm in size, on transverse colon followed by the suture with clipping. Twenty-two hours after EMR she complained epigastralgia and fever. Abdominal CT examination revealed free air arround the transverse colon and duodenum suggesting the perforative peritonitis. Because muscle defence and resistance of upper abdomen were not found, conservative treatment with fasting and antibiotics was selected. It resulted in the improvement of inflammatory findings and disappearance of free air 1 week later. Histological findings of resected tumor revealed a carcinoid accompanied with the superficial layer of proper muscle. This case suggested that we should carefully bear in mind to resect a submucosal tumor by endoscopic procedure whenever done with the clipping method.
