Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . The heart is normal in size . The aortic arch is partly calcified . The mediastinal and hilar contours appear unchanged . Patchy scarring at each lung apex is also unchanged . The lungs appear otherwise clear . There are no pleural effusions or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
Hyperinflation . No evidence of acute disease .