Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged . The mediastinal and hilar contours are several with tortuosity of the thoracic aorta again noted . Mild pulmonary vascular congestion is present without overt pulmonary edema . Streaky opacities in the lung bases likely reflect areas of atelectasis , similar to the previous study . No new focal consolidation , pleural effusion or pneumothorax is seen . Remote bilateral rib fractures are again noted . Partially imaged is posterior fusion hardware spanning the thoracolumbar spine .
    OUTPUT:
    
Bibasilar patchy opacities , likely atelectasis . Mild pulmonary vascular congestion .