Bile duct stones and cholangitis

Bile duct stones are classified into two types: primary and secondary. Primary bile duct stones refer to stones that originate in the bile duct system (including intrahepatic bile ducts). The properties of the stones are mostly pigmented mixed stones containing a large amount of bilirubin calcium. There must be stones in the gallbladder. In China, most bile duct stones fall into this category. Secondary bile duct stones are stones formed in the gallbladder through the enlarged bile duct into the common bile duct. The shape and nature of the stones are mostly the same as those in the gallbladder. Most polyhedral cholesterol mixed stones. Due to secondary biliary tract infections, the outer layer of the stones was bilirubin calcium deposits.

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