Extrahepatic Bile Duct Signet Ring Cell Adenocarcinoma

**Semantic type:** Neoplastic Process

**Definition:** An adenocarcinoma that arises from the extrahepatic bile ducts. It is characterized by the presence of signet ring malignant epithelial cells.

**Synonyms:** - Bile Duct Signet Ring Cell Carcinoma - Extrahepatic Bile Duct Signet Ring Cell Carcinoma - Extrahepatic Bile Duct Signet-Ring Cell Carcinoma - Signet Ring Cell Bile Duct Carcinoma - Signet Ring Cell Carcinoma of Bile Duct - Signet Ring Cell Carcinoma of the Bile Duct