我是一家三甲医院肝胆外科的实习医生。某天早晨,我跟教授到病区查房。一推开门,就看到有个小女孩趴在床上,大眼睛忽闪忽闪地看着我们。那双眼睛很清澈,又有点拘谨。在肝胆外科,绝大多数患者都是中老年人,很少能看到年纪这么小的,所以我对这个女孩很好奇。值班医生告诉我,小女孩9岁了,是先天性肝外胆道闭锁,需要肝移植,明天就手术。在这里,有必要普及一点知识。正常人肝脏排泄的胆汁要从肝内毛细胆管、小胆管起,汇合 I am an intern in a hepatobiliary surgery at a top three hospital. One morning, I told the ward to ward rounds. A push to open the door, I saw a little girl lying on the bed, big eyes flirting and looking at us. Those eyes are very clear, a little cautious. In hepatobiliary surgery, the vast majority of patients are middle-aged and elderly, rarely see such a young age, so I am curious about the girl. Doctor on duty told me that the little girl is 9 years old, is a congenital extrahepatic biliary atresia, requiring liver transplants, surgery tomorrow. Here, it is necessary to popularize a little knowledge. Normal liver excretion of bile from the liver capillary bile duct, small bile duct, confluence