Benign diseases of the biliary tract: evaluation with MR cholangiography

MR cholangiography (MRC) is a noninvasive, rapid means of evaluating the biliary tract that, in many instances, may replace invasive procedures such as diagnostic endoscopic retrograde cholangiography and percutaneous transhepatic cholangiography. This article describes and illustrates the MRC features of benign diseases of the biliary tract such as choledocholithiasis; intrahepatic bile duct calculi; congenital anomalies, including aberrant bile ducts and choledochal cysts; postsurgical strictures; and strictures related to chronic pancreatitis.