This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'An increased incidence of cholangiocarcinoma is seen in all of the following, EXCEPT: \nSelect and explain. \nA. Liver flukes, B. Hydatid cyst of liver, C. Sclerosing cholangitis, D. Polycystic disease of liver', 'role': 'user'}, {'content': "Answer: B \nExplanation: Predisposing factors for Cholangiocarcinoma are primary sclerosing cholangitis, liver fluke in Asians caused by opisthorchis viverrini and clonorchis sinensis, chronic biliary inflammation and injury caused by alcoholic liver disease, choledocholithiasis, choledochal cysts and caroli's disease. Ref: Harrison's Principles of Internal Medicine, 18th Edition, Chapter 92, Pages 784, 1762-1763; Bailey and Love's Sho Practice of Surgery, 24th Edition, Page 1077.", 'role': 'assistant'}]