Crohn's disease and sclerosing cholangitis: CT and PTC diagnosis, with MR findings.

Computed tomography (CT), percutaneous transhepatic cholangiography (PTC) and magnetic resonance imaging (MRI) findings in a case of sclerosing cholangitis associated with Crohn's disease of the colon and terminal ileum are described. CT gives additional information on dilatation of peripheral bile ducts and confirms findings of PTC, i.e. a decreased arborization of the biliary tree, a nodular appearance of the common bile duct and multifocal bile duct strictures. CT findings could be recognized on MRI which provided no additional information.