Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to previous radiograph from ___ , there has been interval improvement of bibasilar atelectasis . There is minimal left lower lung atelectasis . There is no definite evidence of pleural effusion . There is no pneumothorax . Sternal wires are intact .
    OUTPUT:
    
Interval improvement of bibasilar atelectasis .