| http://www.w3.org/ns/prov#value | - Extrahepatic Cholangiocarcinoma T1 confined to the bile duct T2 invades beyond the wall of the bile duct T3 invades the liver, gallbladder, pancreas, and/or unilateral branches of the portal vein or hepatic artery T4 Invades any of the following: main portal vein or its branches bilaterally, common hepatic artery, or other adjacent structures, such as the colon, stomach, duodenum, or abdominal wal
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