Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged and the heart size is within normal limits . The pulmonary vasculature is normal . Small bilateral pleural effusions are re- demonstrated , not substantially changed in the interval . There is minimal bibasilar atelectasis . Remainder of the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . Multilevel degenerative changes are seen in the imaged thoracic spine .
    OUTPUT:
    
Small bilateral pleural effusions , not substantially changed in the interval .