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 . There is no pleural effusion or pneumothorax . There is patchy left infrahilar opacity with peribronchial cuffing . Potentially , this may be at baseline but prior radiographs are not available for comparison . The possibility of lower airway infection or even early or mild bronchopneumonia should be considered . Slight scarring is present at each lung apex . The osseous structures are unremarkable .
    OUTPUT:
    
Vague left infrahilar density , possibly associated with lower airway inflammation or infection , or potentially early or mild bronchopneumonia , but not of definite significance .