Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top - normal . Left axillary surgical clips are present . Left upper lobe and left retrocardiac opacities may reflect consolidations or focal atelectasis . No displaced rib fractures are detected . The right lung is clear .
    OUTPUT:
    
Left retrocardiac and left upper lobe opacities reflecting atelectasis and / or consolidations . No pneumothorax .