How is hilar cholangiocarcinoma caused?

At this stage, the specific causes of hilar cholangiocarcinoma are not very clear, and may be related to chronic inflammation of the gallbladder, choledochal cyst, bile duct stones, benign biliary tumors, hepatitis B, hepatitis C, biliary parasites, congenital cystic dilatation and other diseases. For hilar cholangiocarcinoma, a comprehensive examination should be done first. If the lesion is small, radical surgery can be considered. If the tumor is large and radical surgery cannot be taken, percutaneous intrahepatic biliary drainage or U-tube drainage can be taken.