Malignant paraganglioma draining into the main portal vein.
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.
Furukawa
K
K
Center of Diagnostic Ultrasound, Red Cross Hospital, Saruta Kamikitade, Akita, Japan. kayokoo@tiara.ocn.ne.jp
Ishida
H
H
Komatsuda
T
T
Yagisawa
H
H
Yamada
M
M
Miyauchi
T
T
Heianna
J
J
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