A 53-year-old man was admitted to our hospital with a chief complaint of massive bloody stools and underwent upper and lower gastrointestinal endoscopy. However, the source of bleeding wasn’t revealed. Thus, he underwent abdominal computed tomography, which showed the thicking of small bowel walls and enlargement of lymphnodes. Double-balloon endoscopy (DBE) was performed for the purpose of further examination. The submucosal tumor detected through peranal DBE was located about 45 cm from the ileocecal valve. Histologic examination of the biopsy sample obtained by endoscopy confirmed the diagnosis of a carcinoid tumor. By using DBE, we were able to locate the multiple ileal tumors and to perform surgery successfully without intraoperative endoscopy.
