:Also take a look at intrahepatic bile ducts to rule out obvious dilation.
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File:Ultrasonography of dilated intrahepatic bile ducts.jpg|Dilated intrahepatic bile ducts.<ref>{{cite journal|last1=Yoo|first1=Youngsun|last2=Mun|first2=Seongpyo|title=Synchronous double primary squamous cell carcinoma and adenocarcinoma of the extrahepatic bile duct: a case report|journal=Journal of Medical Case Reports|volume=9|issue=1|year=2015|issn=1752-1947|doi=10.1186/s13256-015-0600-1}}</ref>
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