- Tumor histology and immunohistochemical studies:
- Tumor extension: No evidence of primary tumor No invasion (carcinoma in situ/high-grade dysplasia) Tumor confined to the bile duct histologically Tumor invades beyond the wall of the bile duct Tumor invades the duodenum Tumor invades the pancreas Tumor invades the pancreas, involves posterior surface of pancreas Tumor invades the pancreas, involves anterior surface of pancreas Tumor invades the pancreas, involves vascular bed/groove (corresponding to superior mesenteric vein/portal vein) Tumor invades gallbladder Tumor directly invades adjacent organs other than the gallbladder, specify (duodenum, amplulla, stomach, gallbladder, omentum, celiac azis, superior mesenteric artery, common hepatic artery, etc.): Cannot be assessed
Choledochal cyst Dysplasia Primary sclerosing cholangitis Biliary stones
- Other (specify):
- Additional notes: