Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable including mild of unfolding of the descending thoracic aorta . Streaky opacity projecting over the left lower lung is unchanged and suggests minor scarring . Elsewhere , the lungs remain clear . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease . ___ , MD , PhD