title: Asymptomatic extrahepatic portal obstruction without portal hypertensive findings detected in ultrasonic mass screening.
abstract: OBJECTIVE
  We report three adult cases of extrahepatic portal obstruction (EHPO) detected by ultrasonic (US) mass screening.
  
  
  METHODS
  All these cases were asymptomatic with no abnormalities on hematological or biochemical tests. Only indocynanine green clearance test revealed a slight abnormality. By imaging modalities, the portal trunk could not be visualized and cavernous transformation could be visualized.
  
  
  RESULTS
  There were no findings of portal hypertension, such as splenomegaly, esophageal varices and hepatofugal collaterals, in any of these cases.
  
  
  CONCLUSIONS
  As many EHPOs without symptoms can be detected on US mass survey, US is considered to be the best modality for screening for this disease.
authors.affiliation: Department of Clinical Laboratory Medicine, Faculty of Medicine, Tottori University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Koda
authors.forename: S
authors.initials: S
authors.lastname: Ikawa
authors.forename: J
authors.initials: J
authors.lastname: Kobayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Murawaki
authors.forename: Y
authors.initials: Y
authors.lastname: Horie
authors.forename: T
authors.initials: T
authors.lastname: Suou
authors.forename: H
authors.initials: H
authors.lastname: Kawasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Miyoshi
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D011168:Portal System / Q000000981:diagnostic imaging*; D014463:Ultrasonography; D014652:Vascular Diseases / Q000000981:diagnostic imaging