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': 'HRCT is investigation of choice for diagnosing all of the following conditions, EXCEPT: \nSelect and explain. \nA. Sarcoidosis, B. Miliary tuberculosis, C. Interstitial fibrosis, D. Pulmonary aery aneurysm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CT/MRI aeriography is used for investigation of pulmonary aery aneurysms. HRCT findings in Sarcoidosis: Common findings are: Small nodules in a perilymphatic distribution (i.e. along subpleural surface and fissures, along interlobular septa and the peribronchovascular bundle). Upper and middle zone predominance. Lymphadenopathy in left hilus, right hilus and paratracheal (1-2-3 sign). Often with calcifications. HRCT findings in Miliary TB: It is characterized by uniform small nodules (2-3 mm) with a random distribution. Characteristic high-resolution CT (HRCT) findings of idiopathic pulmonary fibrosis (IPF) includes reticulation, architectural distoion, and honeycombing involving mainly the lung periphery and the lower lobes.', 'role': 'assistant'}]