How are extrahepatic causes of biliary obstruction further subdivided?

Updated: Oct 16, 2019
  • Author: Jennifer Lynn Bonheur, MD; Chief Editor: Vinay Kumar Kapoor, MBBS, MS, FRCS, FAMS  more...
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Answer

Extrahepatic causes may be further subdivided into those that are intraductal and those that are extraductal.

Intraductal causes include stone disease, neoplasms, biliary stricture, parasites, primary sclerosing cholangitis (PSC), AIDS-related cholangiopathy, and biliary tuberculosis.

Extraductal obstruction caused by external compression of the biliary ducts may be secondary to neoplasms, pancreatitis, or cystic duct stones with subsequent gallbladder distension.


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