Bile ducts of hilus hepatis , right or left lobe , medial segment and anterior right segment can be exposed and incised through hilus hepatis or quadrate lobe . all major intrahepatic bile ducts of the right lobe can be exposed and incised by an approach cutting through the liver parenchyma on its diaphragmatic surface 經肝門區或肝方葉可以顯露和切開肝門膽管、左右肝管和左內葉、右前葉膽管,經肝膈面切開肝實質進路,可以顯露和切開右肝內各葉段膽管。