title: An anomaly in persistent right umbilical vein of portal vein diagnosed by ultrasonography.
abstract: OBJECTIVE
  To detect the anomaly in the persistent right umbilical vein (PRUV) of portal vein (PV) with deviation of the ligamentum tere and left-sided gallbladder.
  
  
  METHODS
  A total of 5783 candidates for routine analysis were evaluated for hepatic vascular abnormalities by ultrasonography.
  
  
  RESULTS
  Ten candidates (0.17%) had a portal vein anomaly with a rightward-deviated ligamentum tere. The blood-flow velocity in the PRUV of the portal vein (17.7+/-3.0 cm/s) of the 10 cases was similar to that of the right anterior portal trunk (17.6+/-4.1 cm/s). However, the vessel diameter of the PRUV (eta12.4+/-4.4 mm) was larger than the right anterior portal trunk (eta6.1+/-0.9 mm). Therefore, flow volume in the anomalous portion (0.97+/-0.30 L/min) was more than that in the right anterior portal trunk (0.18+/-0.05 L/min).
  
  
  CONCLUSIONS
  The anomaly plays an important role in intra-hepatic PV flow.
authors.affiliation: Department of Internal Medicine, 2-174, Edobashi, Tsu, Mie 514-8507, Japan.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Nakanishi
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shiraki
authors.forename: Kouji
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Koyama
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakano
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008022:Ligaments / Q000002:abnormalities; D008102:Liver Circulation; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D015995:Prevalence; D014463:Ultrasonography; D014471:Umbilical Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D014652:Vascular Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000473:pathology