<prompt> Cholangiocarcinoma has been associated with infection by:Paragonimus westermaniClonorchis sinensisLoa LoaSchistosoma haematobium  <response>: Risk Factors for Cholangiocarcinoma Choledocholithiasis Clonorchis sinensis and Opisthorchis viverrini Cirrhosis Radon Asbestos, Nitrosamines, Dioxin AND Diabetes, Obesity, OCPs, Smoking, Thorotrast, Isoniazid DOSTI Most common symptom is jaundice IOC - MRI MRCP Rx Hilar cholangiocarcinoma - CBD Resection routine caudate lobectomy Lymphadenectomy Distal cholangiocarcinoma - Pylorus preserving whipples procedure Gemcitabine cisplatin is used for advanced cases. 