title: Obscure gastrointestinal bleeding caused by small intestinal lipoma: a case report.
abstract: BACKGROUND
  Small intestinal lipomas are rare, usually asymptomatic, and most commonly encountered incidentally during investigation of the gastrointestinal tract for another reason. However, they may cause obscure gastrointestinal bleeding.
  
  
  METHODS
  We report a case of obscure gastrointestinal bleeding due to a small intestinal lipoma. A 69-year-old Japanese man on antiplatelet therapy presented to our department with tarry stools and anemic symptoms. A small intestinal tumor was detected by capsule endoscopy and double-balloon endoscopy. After laparoscopic resection, the tumor was confirmed to be a lipoma.
  
  
  CONCLUSIONS
  Small intestinal lipomas are difficult to detect by conventional modalities, but capsule endoscopy and double-balloon endoscopy are good modalities for the diagnosis of small intestinal lipomas. Treatment of small intestinal lipomas should be selected carefully, considering the tumor size, size of stalk, administration of antithrombotic therapy, and endoscopic operability.
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Noboru
authors: N
authors: Yatagai
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan. psyro@juntendo.ac.jp.
authors: Hiroya
authors: H
authors: Ueyama
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Tomoyoshi
authors: T
authors: Shibuya
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Keiichi
authors: K
authors: Haga
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Masahito
authors: M
authors: Takahashi
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Osamu
authors: O
authors: Nomura
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Naoto
authors: N
authors: Sakamoto
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Taro
authors: T
authors: Osada
authors: Department of Human Pathology, Juntendo University, School of Medicine, Tokyo, Japan.
authors: Takashi
authors: T
authors: Yao
authors: Department of Gastroenterology, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
authors: Sumio
authors: S
authors: Watanabe
mesh_terms: D000368:Aged; D053704:Capsule Endoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D006801:Humans; D007414:Intestinal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D007421:Intestine, Small / Q000601:surgery; D008067:Lipoma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008297:Male
keywords: Capsule endoscopy; Case report; Double-balloon endoscopy; Lipoma; Obscure gastrointestinal bleeding; Small intestine