title: Cholangiocarcinoma associated with thorium dioxide (thorotrast): report of a case.
mesh_terms: D002759:Adenoma, Bile Duct / Q000139:chemically induced / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced; D013911:Thorium Dioxide / Q000009:adverse effects*
chemical_list: D013911:Thorium Dioxide