Abstract
A 79-year-old male who had been treated for organic mental disorder and cognitive impairment was referred because of acute epigastric pain, abdominal distention and reduction in blood pressure. He had remarkable abdominal distention, tenderness, rebound tenderness, and muscular defense all around his abdomen. Computed tomography (CT) revealed a remarkable amount of intraperitoneal free air, gastric dilatation, retention of food debris and gas in the anterior wall of the stomach. He was diagnosed with acute peritonitis due to gastric perforation caused by gastric dilatation, and therefore underwent an emergency laparotomy. The stomach was dilated and perforated. The anterior wall of the stomach was necrotic, except for part of the cardia and antrum. Total gastrectomy was performed, and he was discharged without any major trouble. Gastric necrosis and perforation due to overeating-induced gastric dilatation is uncommon.
