_:vb50941381 . _:vb50941381 . _:vb50941381 . _:vb50941381 . _:vb50941381 "url:https://link.springer.com/chapter/10.1007/978-3-319-12985-3_15"^^ . _:vb50941381 . _:vb50941381 "A biliary tract benign neoplasm that is located_in the gallbladder."^^ .