Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small bilateral pleural effusions appear slightly improved since ___ . The heart size remains top normal . A tortuous aorta is again demonstrated . There is no pneumothorax . Bibasilar atelectasis appears slightly improved . Mild degenerative changes throughout the thoracic spine appear stable .
    OUTPUT:
    
Interval slight improvement of small bilateral pleural effusions .