label: Benign Extrahepatic Bile Duct Non-Epithelial Neoplasm
label_lc: benign extrahepatic bile duct non-epithelial neoplasm
description: A neoplasm that arises from the non-epithelial tissues of the extrahepatic bile ducts and is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.