Benign | Premalignant | Malignant |
Tumours of intrahepatic bile ducts | ||
Bile duct adenoma | Biliary intraepithelial neoplasia | Intrahepatic cholangiocarcinoma |
Microcystic adenoma | Intraductal papillary neoplasm | Intraductal papillary neoplasm with associated invasive neoplasia |
Biliary adenofibroma | Mucinous cystic neoplasm | Mucinous cystic neoplasm with associated invasive neoplasia |
Premalignant | Carcinoma |
Tumours of extrahepatic bile ducts | |
Adenoma | Adenocarcinoma |
Biliary intraepithelial neoplasia | Adenosquamous carcinoma |
Intracystic (gall bladder) or intraductal (bile duct) papillary neoplasm | Intracystic (gall bladder) or intraductal (bile duct) papillary neoplasm + associated invasive neoplasia |
Mucinous cystic neoplasm | Mucinous cystic neoplasm with associated invasive neoplasia |
Squamous cell carcinoma | |
Undifferentiated carcinoma |