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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is NOT a high risk factor for cholangiocarcinoma?
assistant
The correct answer is  Cholangiocarcinoma is a rare tumor arising from the biliary epithelium and may occur anywhere along the biliary tree. About two thirds are located at the hepatic duct bifurcation. Risk factors associated with cholangiocarcinoma include, Primary sclerosing cholangitis Choledochal cysts Ulcerative colitis Hepatolithiasis Biliary-enteric anastomosis Biliary tract infections with Clonorchis Chronic typhoid carriers Liver flukes Dietary nitrosamines Thorotrast Exposure to dioxin Ref: Oddsdottir M., Pham T.H., Hunter J.G. (2010). Chapter 32. Gallbladder and the Extrahepatic Biliary System. In F.C. Brunicardi, D.K. Andersen, T.R. Billiar, D.L. Dunn, J.G. Hunter, J.B. Matthews, R.E. Pollock (Eds), Schwaz's Principles of Surgery, 9e