Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . The lungs are slightly hyperinflated . Lungs are clear . No nodules are identified . No pleural effusion or pneumothorax is seen . Chronic fracture of the left 6th rib is unchanged .
    OUTPUT:
    
Mildly hyperinflated lungs with no acute cardiopulmonary abnormality .