title: Ultrasonic characteristics of periportal collateral circulation in hepatocellular carcinoma with portal vein invasion.
abstract: Real-time ultrasound (US) was used to analyze the morphological characteristics of periportal collateral circulation (PPCC) and the hepatic artery in hepatocellular carcinoma (HCC) patients with portal vein invasion (PVI). During a 5-year interval, a total of 17 HCC patients with main portal vein thrombosis and detectable periportal vessels were collected: 14 men and 3 women, aged 27 to 76 years old. We examined these patients' periportal vessels by real-time US, then differentiated PPCC from hepatic artery by duplex Doppler US. We analyzed the morphological appearances of real-time US imaging of PPCC and the hepatic artery. Our results showed that the PPCC was always torturously worm-like in appearance on real-time US, and the hepatic artery usually had a linear channel appearance on real-time US. When these two kinds of vessels were seen simultaneously along the pathway of a thrombosed portal vein, the inner vessel was always the hepatic artery with linear channel structure, and the outer vessel was always PPCC with a torturously worm-like structure. In conclusion, real-time US is a useful and reliable modality in detecting periportal vessels and differentiating PPCC from the hepatic artery.
authors.affiliation: Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, No. 100, Shih-Chuan 1st Road, Kaohsiung City, 807 Taiwan.
authors.forename: F S
authors.initials: FS
authors.lastname: Lin
authors.forename: S C
authors.initials: SC
authors.lastname: Chen
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Lin
authors.forename: M Y
authors.initials: MY
authors.lastname: Hsieh
authors.forename: L Y
authors.initials: LY
authors.lastname: Wang
authors.forename: W L
authors.initials: WL
authors.lastname: Chuang
authors.forename: W Y
authors.initials: WY
authors.lastname: Chang
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging* / Q000473:pathology; D003097:Collateral Circulation; D005260:Female; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D011169:Portal Vein / Q000473:pathology*; D014463:Ultrasonography