Metastatic Malignant Neoplasm in the Extrahepatic Bile Ducts

**Semantic type:** Neoplastic Process

**Definition:** A malignant neoplasm that has spread to the extrahepatic bile ducts from another anatomic site. Representative examples include metastatic melanoma and metastatic breast and gastric carcinomas.

**Synonyms:** - Metastatic Malignant Neoplasm to the Extrahepatic Bile Ducts