抄録
A 64-year-old man was admitted to our hospital complaining of melena and anemia. Gastrointestinal endoscopy and colonoscopy were performed, but the source of hemorrhage was not detected. Abdominal computed tomography showed enhanced mass in pelvis, that seemed to develop from the small bowel. Capsule endoscopy and single balloon endoscopy were performed, and a submucosal tumor with erosion and redness was found. A partial resection of small intestine was performed. Histopathologically, the tumor cells were spindle-shaped. Immunopathological study of tumor was positive for c-kit and CD-34, so we finally diagnosed with small intestinal gastrointestinal stromal tumor (GIST) . The postoperative course was uneventful. It is considered that CE and BE may be useful to diagnose the small intestinal GIST.
