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': "Turcot's syndrome is associated with -a) Duodenal polypsb) Familial adenomatous polyposisc) Brain tumorsd) Villous adenomae) Hyperplastic polyps \nSelect and explain. \nA. a, B. c, C. bc, D. ad", 'role': 'user'}, {'content': "Answer: C \nExplanation: Turcot's syndrome is a variant of Familial adenomatous polyposis characterized by\n- Colorectal polyposis\n- Brain tumors (Medulloblastoma, Glioblastoma multiforme)\nThe colonic polyps in Turcot's syndrome are fewer and larger than in classic FAP.", 'role': 'assistant'}]