Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . Patchy bibasilar airspace opacities are noted . Cardiomediastinal and hilar contours are unremarkable with mild calcification noted at the aortic knob . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Hyperinflated lungs suggestive of COPD . Mild bibasilar airspace opacities could suggest infection or aspiration .