title: Ultrasonographic diagnosis of adult intussusception caused by pedunculated colon carcinoma.
abstract: Adult intussusception is clinically rare. We report a case with colon intussusception caused by a pedunculated polyp of the sigmoid colon in a 54-year-old male. Abdominal ultrasonographic screening for hematochezia showed intussusception in the sigmoid colon, demonstrating a multiple concentric ring sign and a mobile leading colon polyp. Histological examination of a biopsy specimen of the polyp revealed adenoma. This report suggests that ultrasound imaging is a modality of choice for differential diagnosis of intestinal intussusception with hematochezia in adults.
authors.affiliation: Department of Internal Medicine, Division of Gastroenterology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan. naruhiko@is.icc.u-tokai.ac.jp
authors.forename: Naruhiko
authors.initials: N
authors.lastname: Nagata
authors.forename: Satomi
authors.initials: S
authors.lastname: Asai
authors.forename: Seiho
authors.initials: S
authors.lastname: Gocho
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shirakura
authors.forename: Jun
authors.initials: J
authors.lastname: Koike
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Suzuki
authors.forename: Norihito
authors.initials: N
authors.lastname: Watanabe
authors.forename: Takayuki
authors.initials: T
authors.lastname: Shirai
authors.forename: Takashi
authors.initials: T
authors.lastname: Minemura
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Mine
authors.forename: Hayato
authors.initials: H
authors.lastname: Miyachi
mesh_terms: D018256:Adenomatous Polyps / Q000150:complications / Q000000981:diagnostic imaging*; D003111:Colonic Polyps; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007443:Intussusception / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012811:Sigmoid Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color