[MR cholangiopancreatography of Mirizzi syndrome and Lemmel syndrome].

The purpose of this study is to evaluate the usefulness of MR cholangiopancreatography (MRCP) in diagnosing Mirizzi syndrome and Lemmel syndrome. MRCP could show compressed common hepatic duct by enlarged gallbladder in Mirizzi syndrome. Periampulary duodenal diverticulum and compressed lower bile duct can be recognized clearly by MRCP after secretin stimulation. So MRCP should apply for diagnosing of Mirizzi syndrome or Lemmel syndrome.