title: Massive mesenteric edema in a patient with type I hereditary angioedema.
abstract: We report a patient with hereditary angioedema (HAE) presenting with skin edema and abdominal pain. Laboratory examination showed reduced levels of CH50, C2, C4, and C1 inhibitor (C1-INH). Abdominal computed tomography (CT) showed marked mesenteric edema and wall thickening of the duodenum and transverse colon. Acute abdominal pain is common in HAE and is difficult to distinguish from surgical emergency. Massive mesenteric edema on CT is a rare, but specific, sign suggesting HAE.
authors.affiliation: Third Department of Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan. sekijima@hsp.md.shinshu-u.ac.jp
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Sekijima
authors.forename: Takao
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Koshihara
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kawachi
authors.forename: Fujio
authors.initials: F
authors.lastname: Otsuka
authors.forename: Shu-ichi
authors.initials: S
authors.lastname: Ikeda