Risk factors for cholangiocarcinoma

Chronic inflammatory conditions- 

• Primary sclerosing cholangitis (PSC)

• Oriental cholangiohepatitis

• Hepatitis C infection

 

Parasitic infections- 

• Opisthorchis viverrini

• Clonorchis sinensis

 

Congenital- 

• Choledochal cysts
• Caroli's disease

 

Chemical agents-

• Thorium dioxide (Thorotrast)

• Vinyl chloride 

• Dioxin 

• Asbestos 

 

Post surgical- 

• Biliary-enteric anastomosis 

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