title: Malignant paraganglioma draining into the main portal vein.
abstract: Abdominal paraganglioma is a relatively rare tumor, and there have been no previous reports describing its contrast-enhanced ultrasonographic findings. We report a case of a lesion of unknown origin incidentally detected by ultrasound in the right upper abdomen. The lesion was markedly hypervascular and contrast-enhanced ultrasonogram showed it to be communicating with the portal vein. This communication was then confirmed by angiogram. Such an arteriovenous communication through paraganglioma has been recently reported, and a diagnosis of a paraganglioma should be considered when contrast-enhanced ultrasonogram shows a solid mass of unknown origin draining directly into the venous system.
authors.affiliation: Center of Diagnostic Ultrasound, Red Cross Hospital, Saruta Kamikitade, Akita, Japan. kayokoo@tiara.ocn.ne.jp
authors.forename: K
authors.initials: K
authors.lastname: Furukawa
authors.forename: H
authors.initials: H
authors.lastname: Ishida
authors.forename: T
authors.initials: T
authors.lastname: Komatsuda
authors.forename: H
authors.initials: H
authors.lastname: Yagisawa
authors.forename: M
authors.initials: M
authors.lastname: Yamada
authors.forename: T
authors.initials: T
authors.lastname: Miyauchi
authors.forename: J
authors.initials: J
authors.lastname: Heianna
mesh_terms: D000008:Abdominal Neoplasms / Q000000981:diagnostic imaging*; D001164:Arteriovenous Fistula / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D017538:Mesenteric Artery, Superior / Q000000981:diagnostic imaging; D008875:Middle Aged; D010235:Paraganglioma / Q000000981:diagnostic imaging*; D011169:Portal Vein / Q000000981:diagnostic imaging*; D014463:Ultrasonography