The high flow volume and oxygen content blood in arteried portal vein can full PBP through adverse current of branching vessel,this is anatomical foundation that hepatohilar bile duct tissues keep normal structure.

• 动脉化门静脉高含氧量与高流量的血液可通过侧支血管逆流灌注PBP,是肝门部胆管壁组织维持正常形态的解剖学基础。