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': 'Incidence of malignancy is maximum in - \nSelect and explain. \nA. Villous adenoma, B. Juvenile polyps, C. Hyperplastic polyps, D. Tubular adenoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Incidence of malignancy is maximum in villous adenoma ie upto 30-70% in comparison to Tubular adenoma (1-3%)\nJuvenile polyp (hamartomatous polyp) and Hyperplastic polyp are non-neoplastic epithelial tumors of intestine. There is no increased risk of malignancy.\nTubular adenoma & villous adenoma are benign neoplastic lesion, but have propensity to become malignant.\nTubular adenoma \xa0(also k/a Adenomatous polyp)\naccount for over 90% of colonic adenomas\n1-3% incidence of carcinoma\nAlthough the risk of cancer is small, the high frequency of these polyps in the population makes them the most important precancerous colonic lesions.\n\nVillous adenoma\n\n\nare uncommon, comprising less than 10% of colonic adenomas\nhave a 30-70% incidence of carcinoma', 'role': 'assistant'}]