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 lungs are hyperinflated to a moderate degree . There is no pleural effusion or pneumothorax , although it is noted that the extreme posterior costophrenic foci are excluded on the lateral view . The lungs appear clear .
    OUTPUT:
    
Hyperinflation . No evidence of acute disease .