Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The study is somewhat limited due to underpenetration . Cardiac silhouette size remains moderately enlarged , primarily due to the presence of prominent epicardial fat . Widening of the superior mediastinum is also unchanged and attributable to mediastinal lipomatosis . Crowding of the bronchovascular structures is noted , with mild vascular congestion , similar to the prior chest radiograph . Lung volumes are low with mild patchy bibasilar airspace opacities , likely atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion . Low lung volumes with probable bibasilar atelectasis .