title: Delayed Diagnosis of Mirizzi Syndrome.
abstract: Biliary obstruction occurs in a wide variety of malignant and benign conditions. The following is a unique case of biliary obstruction caused by external compression of the hepatic duct by a gallstone (Mirizzi syndrome). Owing to unusual imaging characteristics of the stone, the mass was initially mistaken for a malignancy or hepatic pseudoaneurysm. It was not until the patient developed gallstone ileus that the correct diagnosis was made.
authors.affiliation: Biological Sciences Division, Pritzker School of Medicine, University of Chicago, Chicago, Illinois.
authors.forename: Olufunmilola
authors.initials: O
authors.lastname: Oladini
authors.affiliation: Department of Radiology, University of Chicago Medical Center, University of Chicago, Chicago, Illinois.
authors.forename: Steven M
authors.initials: SM
authors.lastname: Zangan
authors.affiliation: Department of Radiology, University of Chicago Medical Center, University of Chicago, Chicago, Illinois.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Navuluri
keywords: Mirizzi syndrome; biliary obstruction; cholangiocarcinoma; gallstone; interventional radiology; pseudoaneurysm