_:vb50946756 . _:vb50946756 . _:vb50946756 . _:vb50946756 "url:https://www.cancer.gov/publications/dictionaries/cancer-terms/def/extrahepatic-bile-duct-cancer"^^ . _:vb50946756 . _:vb50946756 . _:vb50946756 "A biliary tract benign neoplasm that is located_in the extrahepatic bile duct and derives_from fat cells."^^ . _:vb50946756 .