Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . No focal consolidation , effusion , edema , or pneumothorax . The heart is normal in size . Mediastinal contours are unchanged . The descending aorta slightly ectatic or tortuous . Mild aortic knob calcifications are unchanged . Mild right AC joint degenerative changes are noted .
    OUTPUT:
    
No pneumonia . Hyperinflated lungs .