Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . No focal consolidations concerning for infection is identified . Note is made of mild bibasilar atelectasis , and mild bibasilar interstitial scarring stable compared to studies dated back to at least ___ . There is no pleural effusion or pneumothorax . Again noted are old healed right rib fractures .
    OUTPUT:
    
No focal consolidation concerning for pneumonia .