Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . There is mild unfolding of the thoracic aorta . Hilar contours are normal . Mild scarring is noted in bilateral apices along with small peripheral blebs . There is mild hyperinflation compatible with COPD . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality . COPD .