A midline abdominal incision was performed and the left portal vein was carefully separated ligation from the left bile duct and hepatic artery.

• 经上腹部正中切口入腹，分离出供应肝左叶和中叶的门静脉分支，用4-0丝线结扎，保留供应肝右叶、尾叶及乳突叶的门静脉分支，被结扎侧肝脏约占全肝重量的70%25。