- Tumor histology and immunohistochemical studies:
- Tumor extension: No invasion (carcinoma in situ / high-grade dysplasia including intraductal papillary neoplasm of bile duct with high-grade dysplasia, intraductal tubulopapillary neoplasm of bile duct with high-grade dysplasia) Confined to bile duct Invades connective tissue surrounding wall of bile duct Invades adjacent liver parenchyma Invades gallbladder Invades unilateral branches of portal vein (right or left) Invades unilateral branches of hepatic artery (right or left) Invades main portal vein or its branches bilaterally Invades common hepatic artery Invades second-order biliary radicals unilaterally Invades second-order biliary radicals bilaterally Other (specify): Cannot be assessed No evidence of primary tumor
Choledochal cyst Dysplasia Primary sclerosing cholangitis Biliary stones
- Other (specify):
- Additional notes: