Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . The chest appears somewhat hyperinflated . There is no pleural effusion or pneumothorax . There is no indication of lymphadenopathy or parenchymal interstitial disease that would be likely to reflect sarcoidosis . In the lingula , there is persistent minor opacification , but considerably reduced so possibly due to scarring from a prior process .
    OUTPUT:
    
Persistent lingular opacity , but markedly reduced , so possibly due to scarring ; although perhaps unlikely recurrent pneumonia at the site is not entirely excluded , however . No radiographic findings particularly suggestive of active sarcoid .