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: Radiology
[{'content': 'All of the following are diagnostic features of illeocecal tuberculosis on barium follow through, except: \nSelect and explain. \nA. Apple-core sign, B. Pulled up contracted angle, C. Widening of ileocecal angle, D. Strictures involving the terminal ileum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Apple core sign is a feature of carcinoma of colon, not ileocecal tuberculosis. Pulled up contracted angle, widening of ileocecal angle and strictures involving the terminal ileum are all signs of ileocecal tuberculosis. Ref: Clinical Medicine a Practical Manual for Students and Practice By Agarwal, Page 244; Journal of Indian Academy of Clinical Medicine, Volume 2 No 3, July-September, 2001, Page 171', 'role': 'assistant'}]