title: Internal hernia through the foramen of Winslow: the "narrowed portal vein" sign on abdominal CT.
abstract: We report a case of ileal internal hernia through the foramen of Winslow into the lesser sac. Preoperative computed tomography (CT) demonstrated that the herniated ileum, which showed a closed-loop obstruction, was located behind the portal vein, and the vein was subsequently compressed and narrowed by the herniated ileum. We found that similar cases in the literature of Winslow's foramen hernias that caused portal vein compression; however, portal vein narrowing has not been described as a characteristic CT finding. The narrowed portal vein sign could be useful in diagnosing the hernia through the foramen of Winslow.
authors.affiliation: Department of Radiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan.
authors.forename: Tsuneo
authors.initials: T
authors.lastname: Yamashiro
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Ikeda
authors.forename: Atsuko
authors.initials: A
authors.lastname: Fujikawa
authors.forename: Kazuki
authors.initials: K
authors.lastname: Hashimoto
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Morimoto
authors.forename: Kunihisa
authors.initials: K
authors.lastname: Miyakawa
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Onoda
authors.forename: Tetsu
authors.initials: T
authors.lastname: Fukunaga
authors.forename: Takehito
authors.initials: T
authors.lastname: Otsubo
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Nakajima
mesh_terms: D000368:Aged; D005260:Female; D006547:Hernia / Q000000981:diagnostic imaging*; D006801:Humans; D007077:Ileal Diseases / Q000000981:diagnostic imaging; D007082:Ileum / Q000000981:diagnostic imaging; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging; D011169:Portal Vein / Q000000981:diagnostic imaging; D011860:Radiography, Abdominal; D014057:Tomography, X-Ray Computed