biliary tract disease +

bile reflux
biliary tract benign neoplasm +
perforation of bile duct
postcholecystectomy syndrome

ampulla of Vater benign neoplasm +
bile duct adenoma +
bile duct cancer +
bile duct carcinoma in situ
bile duct cystadenoma +
Caroli disease
Caroli syndrome
cholangitis +
choledochal cyst
cholestasis +
common bile duct disease +
extrahepatic bile duct leiomyoma
extrahepatic bile duct lipoma
fascioliasis