Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Normal cardiomediastinal and hilar contours . Lungs are clear . Stable , mild , biapical pleural scarring , more pronounced on the left . No pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Stable , mild , biapical pleural scarring . 2 . No acute cardiopulmonary abnormality .