What are parasitic causes of biliary obstruction?

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

Of parasitic causes, adult Ascaris lumbricoides can migrate from the intestine into the bile ducts, thereby obstructing the extrahepatic ducts. Eggs of certain liver flukes (eg, Clonorchis sinensis, Fasciola hepatica) can obstruct the smaller bile ducts within the liver, resulting in intraductal cholestasis. This is more common in Asian countries. [3]


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