title: Arteriovenous malformation of the gallbladder: CT and angiographic findings.
abstract: We encountered a case of arteriovenous malformation (AVM) of the gallbladder in a patient with hepatocellular carcinoma (HCC). Contrast-enhanced computed tomography (CT) showed serpentine vessels around and within the gallbladder wall. Angiography showed dilated and tortuous cystic arteries, a racemose vascular network, and early-filling cystic veins. Transcatheter arterial embolization of two cystic arteries feeding the AVM was performed with platinum microcoils prior to transcatheter arterial chemoembolization for HCC to prevent embolic particles from flowing into these arteries. Follow-up contrast-enhanced CT showed blood flow in the gallbladder AVM, which appeared to be fed by the arterial collaterals.
authors.affiliation: Department of Radiology, Saitama Medical Center, Saitama Medical School, 1981 Kamoda, Kawagoe 350-8550, Japan. osada@saitama-med.ac.jp
authors.forename: Hisato
authors.initials: H
authors.lastname: Osada
authors.forename: Norinari
authors.initials: N
authors.lastname: Honda
authors.forename: Takeo
authors.initials: T
authors.lastname: Takahashi
authors.forename: Shinya
authors.initials: S
authors.lastname: Oku
authors.forename: Wataru
authors.initials: W
authors.lastname: Watanabe
authors.forename: Takemichi
authors.initials: T
authors.lastname: Okada
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ohno
authors.forename: Mikito
authors.initials: M
authors.lastname: Hondo
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Nishimura
mesh_terms: D000368:Aged; D000792:Angiography; D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging* / Q000628:therapy; D006528:Carcinoma, Hepatocellular / Q000150:complications; D016461:Chemoembolization, Therapeutic; D003097:Collateral Circulation; D003287:Contrast Media; D005260:Female; D005704:Gallbladder / Q000098:blood supply*; D006801:Humans; D008113:Liver Neoplasms / Q000150:complications; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media