A 55-year-old man with atrial fibrillation and cerebral infarction presented one-month history of abdominal pain, watery diarrhea, hematochezia. Abdominal computed tomography showed wall thickening a limited area the jejunum. Although his symptoms improved as result fasting fluid therapy, pain recurred after resumption oral intake. Single-balloon endoscopy revealed multiple round ulcers in jeju...