Response Options to "Tumor Extension”

___ No invasion (carcinoma in situ/high-grade dysplasia)

___ Tumor confined to the bile duct

___ Tumor invades beyond the wall of the bile duct into surrounding connective tissue

___ Tumor invades the adjacent liver parenchyma

___ Tumor invades the gallbladder

___ Tumor invades the unilateral branches of the portal vein (right or left)

___ Tumor invades the unilateral branches of the hepatic artery (right or left)

___ Tumor invades main portal vein or its branches bilaterally

___ Tumor invades common hepatic artery

___ Tumor invades second-order biliary radicals, unilateral

___ Tumor invades second-order biliary radicals, bilateral

___ Cannot be assessed

Gastrointestinal

Staging

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