金子 政彦, 渡辺 明人, 高田 清式, 玉井 伴範

Masahiko KANEKO, Akihito WATANABE, Kiyonori TAKADA, Tomonori TAMAI

愛媛大学第1内科学

First Department of Internal Medicine, Ehime University School of Medicine

キーワード : Color Doppler flow imaging, Extrahepatic portal vein aneurysm, MR angiography

A 41-year-old man was admitted to this institution for evaluation of a pancreatic tumor. A cystic mass freely communicating with the lumens of the portal, superior mesenteric, and splenic veins was found on ultrasonographic examination at time of admission and was diagnosed as an extrahepatic portal vein aneurysm. Magnetic resonance angiography (MR angiography) and Color Doppler ultrasonography confirmed the diagnosis and were also useful in investigating complications. Aneurysm of the portal vein, particularly that of the extrahepatic portal vein, is rare in Japan.