title: Arteriovenous malformation detected by small bowel endoscopy.
abstract: Gastrointestinal bleeding that originates in the small intestine is often difficult to diagnose. When successful diagnosis reveals a lesion that can be localized preoperatively, the laparoscopic approach is an appropriate and beneficial treatment modality for small bowel resection. A 69-year-old man presented with a 6-month history of gastrointestinal bleeding and symptomatic transfusion-dependent anemia. Upper and lower endoscopy were normal. Double-balloon endoscopy established the source of the bleeding as a 0.5-cm polypoid mass appearing as a submucosal tumor with redness and pulsation in the lower ileum, suggesting a vascular lesion. Laparoscopic small bowel resection was successful in removing the mass in the ileum. Histological evaluation of the mass revealed an arteriovenous malformation. Preoperative small bowel endoscopy can be useful for diagnosing the cause and localization of arteriovenous malformation in the small intestine.
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Takaaki
authors.initials: T
authors.lastname: Fujii
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Morita
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Toshinaga
authors.initials: T
authors.lastname: Sutoh
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Takada
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Soichi
authors.initials: S
authors.lastname: Tsutsumi
authors.affiliation: Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kuwano
keywords: Arteriovenous malformation; Small bowel endoscopy