Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . Streaky opacities in the left lung suggest minor atelectasis or scarring . Elsewhere , the lungs appear clear . There are no pleural effusions or pneumothorax . Bony structures appear within normal range .
    OUTPUT:
    
Streaky left lung opacity suggesting minor atelectasis or scarring . No definite evidence of acute cardiopulmonary disease .