A 84-year-old male patient complained of epigastric pain and fever. A computed tomographic (CT) scan revealed thickening of the stomach wall, and an increased peripheral fat tissue concentration, which was suspected to be caused by gastric cancer. The next day, an upper gastrointestinal endoscopy A type 2 lesion was found in the stomach. The abdominal pain worsened, and CT was repeated. Fluid retention was observed in contact with the tumor, and gastric perforation was suspected. Surgical findings showed a large number of abscesses in the wall. The pathological diagnosis was gastric endocrine cell carcinoma. Endocrine cell carcinoma of the stomach is a rare disease, and the prognosis is poor. In this report, we describe a rare intramural abscess associated with gastric endocrine cell carcinoma and review the related literature.
