Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral chest tubes are in unchanged position . Allowing for changes in patient positioning , the small bilateral pleural effusions appear stable . There is persistent bibasilar atelectasis . Low lung volumes accentuate the bronchovascular structures , though there is no overt pulmonary edema . There is no pneumothorax . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
No significant change since the prior exam , including a stable size of the small bilateral pleural effusions .