MONDO_0021385 (extrahepatic bile duct neoplasm) is a benign or malignant neoplasm that affects the extrahepatic bile ducts. Representative examples include adenoma and adenocarcinoma. Also known as: extrahepatic bile duct neoplasm (disease), extrahepatic bile duct tumor, extrahepatic bile duct tumour, neoplasm of extrahepatic bile duct, neoplasm of the extrahepatic bile duct, tumor of extrahepatic bile duct, tumor of the extrahepatic bile duct, tumour of extrahepatic bile duct.