This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Radiology
[{'content': 'Bilateral pleural plaques and pulmonary fibrosis involving bases is hallmark of \nSelect and explain. \nA. Asbestosis, B. Silicosis, C. Scleroderma, D. Byssinosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. a (Asbestosis) (Ref. Grainger's Diagnostic Radiology, 4th ed., 513; TABLE 24-3)X-RAY FEATURES OF ASBESTOS EXPOSUREPleuralPulmonaryExtrathoracic# Plaques# Fibrosis (asbestosis)# Peritoneal mesothelioma# Diffuse thickening# Bronchial carcinoma# Other extrathorasic malignancies# Effusions# Round atelectasis (pseudotumour) # Mesothelioma", 'role': 'assistant'}]