This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
[{'content': 'Characteristic features of Tubercular meningitis on MR imaging are? \nSelect and explain. \nA. Enhancing exudates predominantly involving basal cisterns, B. Diffuse leptomeningeal enhancement., C. Hydrocephalus, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans DIn TB meningitis there is inflammation of meninges so they enhance on post-contrast images. The exudates are predominantly deposited preferentially in basal cisterns where they either block the aqueduct of sylvius or arachnoid villi resulting in hydrocephalus. These exudates also enhance on post contrast enhancement - this basal enhancement is peculiar of TB meningitis.', 'role': 'assistant'}]