Extrahepatic Bile Duct Undifferentiated Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A carcinoma without evidence of differentiation arising from the extrahepatic bile ducts.

**Synonyms:** - Anaplastic Carcinoma of Extrahepatic Bile Duct - Anaplastic Carcinoma of the Extrahepatic Bile Duct - Anaplastic Extrahepatic Bile Duct Carcinoma - Undifferentiated Carcinoma of Extrahepatic Bile Duct - Undifferentiated Carcinoma of the Extrahepatic Bile Duct - Undifferentiated Extrahepatic Bile Duct Carcinoma