这个词是什么意思？
A congenital anatomic malformation of a bile duct, including cystic dilatation of the extrahepatic bile duct or the large intrahepatic bile duct. Classification is based on the site and type of dilatation. Type I is most common.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D015529 · MeSH 2026。
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