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: Pathology
[{'content': 'All of the following features are seen in asbestosis except - \nSelect and explain. \nA. Diffuse pulmonary interstitial fibrosis., B. Fibrous pleural thickening., C. Emphysema, D. Calcified pleural plaques', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Asbestosis \n\nThere are two distinct geometric forms of asbestos -\n\n\n\nSerpentine chrysotile\n\n\nAmphibole (crocidolite)\n\n\n\nSerpentine chrysotile accounts for most of the asbestos used in industry.\nBoth serpentine and amphibole can cause all asbestosis related disease except for mesothelioma, which is usually\xa0associated with amphibole (crocidolite).\n\nAsbestos-related diseases \n\nLocalized fibrous plaques which may be calcified.\nDiffuse pleural fibrosis\nPleural effusion\nParenchymal interstitial fibrosis (asbestosis).\nLung carcinoma → Most common neoplasm associated with asbestos exposure.\nMesothelioma of pleura and peritoneum most specific neoplasm associated with asbestos exposure.\nLaryngeal and colon carcinomas.\nStomach carcinoma\n\nNote: - Concomitant cigarette smoking greatly increases the risk of lung carcinoma but not that of mesothelioma.', 'role': 'assistant'}]