Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . As compared to prior study , there is no significant change . There is interval improvement in bibasilar atelectasis . Left pleural effusion is no longer seen . Otherwise , postoperative mediastinal silhouette is stable . There is no pneumothorax .
    OUTPUT:
    
Interval improvement in bibasilar atelectasis .