Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Limited examination due to patient 's inability to lift head , causing the upper portions of the lungs to not be fully visualized . However , as compared to prior chest radiograph from ___ , there has been interval improvement of pulmonary congestion . Lung volumes are decreased with probable bibasilar atelectasis . No focal consolidation , definite pleural effusion or pneumothorax is seen . The heart appears enlarged .
    OUTPUT:
    
Limited study . Interval improvement of mild pulmonary vascular congestion .