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': 'Organism associated with fish consumption and also causes carcinoma gallbladder: \nSelect and explain. \nA. Gnathostoma, B. Anglostrongyloidosis cantonensis, C. Clonorchis sinensis, D. H. dimunata', 'role': 'user'}, {'content': 'Answer: C \nExplanation: • Clonorchis sinensis is a liver fluke, acquired by ingestion of raw or inadequately cooked freshwater fishes.\n• In human body, it lives within bile ducts and causes inflammatory reaction leading to cholangiohepatitis and biliary obstruction.\n• It is a well known risk factor for cholangiocarcinoma.\n• It is a rare, but mentioned risk factor for carcinoma gallbladder.', 'role': 'assistant'}]