title: Imaging and estimation of the prognostic features of primary sclerosing cholangitis by ultrasonography and MR cholangiography.
abstract: OBJECTIVE
  To evaluate the ability of US and MR cholangiography (MRC) to detect bile duct changes and prognostic signs of primary sclerosing cholangitis (PSC) seen at endoscopic retrograde cholangiography (ERC).
  
  
  METHODS
  In a prospective study, 9 patients with PSC underwent US, MRC, MR imaging and ERC of the bile ducts and the liver. Eight age- and sex-matched control patients were examined with MRC, MR imaging and ERC. A segmental comparison was performed to assess the ability of MRC-MR and US to reveal the accurate ductal involvement in different segments of the biliary tree and the specific criteria of poor prognostic outcome in PSC. The ability of MRC-MR to detect the presence of PSC in different patients was analysed blindly.
  
  
  RESULTS
  MRC-MR depicted changes of PSC correctly in 9 patients (radiologist 1) and in 8 patients with 1 false-positive finding (radiologist 2) in the blinded analysis. In the segmental comparison, MRC missed especially bile duct dilatations. MRC was too pessimistic in the evaluation of the outcome. US detected features suggestive of PSC in 8 patients (radiologist 3). US was unable to show the predictors of poor outcome.
  
  
  CONCLUSIONS
  MRC and US seem to be useful in the detection of PSC. US is unable and MRC is too pessimistic to estimate the outcome of PSC.
authors.affiliation: Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Oikarinen
authors.forename: E
authors.initials: E
authors.lastname: Pääkkö
authors.forename: I
authors.initials: I
authors.lastname: Suramo
authors.forename: M
authors.initials: M
authors.lastname: Päivänsalo
authors.forename: O
authors.initials: O
authors.lastname: Tervonen
authors.forename: J
authors.initials: J
authors.lastname: Lehtola
authors.forename: J
authors.initials: J
authors.lastname: Aukee
mesh_terms: D000328:Adult; D001652:Bile Ducts / Q000000981:diagnostic imaging / Q000473:pathology*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D015209:Cholangitis, Sclerosing / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011446:Prospective Studies; D014463:Ultrasonography