Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . Hyperinflated lungs are consistent with emphysema . Subtle opacities in the left lower lobe are concerning for an early infectious process . No pleural effusion or pneumothorax is seen . Stable scarring is seen in the right upper lobe .
    OUTPUT:
    
Patchy opacities in the left lower lobe , concerning for an early infectious process . Repeat after treatment to document resolution .