[Mirizzi syndrome. A rare complication of gallstones diagnosed by endoscopic retrograde cholangiopancreatography].

The Mirizzi syndrome is recognized as an external compression of the common hepatic duct by a calculus impacted in the cystic duct. Although it is a rare condition, the diagnosis is important because of the resemblance to malignant strictures in the biliary tract. Two cases diagnosed preoperatively by ERCP are reported.