title: Contrast-enhanced intraductal ultrasonography for thickened bile duct wall.
abstract: OBJECTIVE
  We carried out this study to evaluate the usefulness of contrast-enhanced intraductal ultrasonography (ceIDUS) in the differentiation of thickened bile duct wall at the hepatic bifurcation caused by malignant tumor from that caused by cholangitis.
  
  
  METHODS
  Seven patients (two with primary sclerosing cholangitis [PSC], one with secondary sclerosing cholangitis [SSC], and four with bile duct carcinomas [BDC] at the hepatic bifurcation underwent endoscopic ceIDUS, in which we used Levovist. The recorded images of echo-brightness were analyzed histographically.
  
  
  RESULTS
  The bile duct wall, in PSC and SSC, but not in BDC, was enhanced by Levovist.
  
  
  CONCLUSIONS
  ceIDUS with histographic analysis may be useful for distinguishing thickened bile duct wall caused by malignant tumor from that caused by cholangitis.
authors.affiliation: First Department of General Medicine, Omiya Medical Center, Jichi Medical School, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hyodo
authors.forename: N
authors.initials: N
authors.lastname: Hyodo
authors.forename: T
authors.initials: T
authors.lastname: Yamanaka
authors.forename: M
authors.initials: M
authors.lastname: Imawari
mesh_terms: D000368:Aged; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging; D001652:Bile Ducts / Q000000981:diagnostic imaging*; D018281:Cholangiocarcinoma / Q000000981:diagnostic imaging; D002761:Cholangitis / Q000000981:diagnostic imaging*; D003287:Contrast Media; D003937:Diagnosis, Differential; D019160:Endosonography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011134:Polysaccharides
chemical_list: D003287:Contrast Media; D011134:Polysaccharides; C059891:SHU 508