Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette remains moderate to severely enlarged . The mediastinal contours are stably widened . There is mild pulmonary vascular congestion . A trace left pleural effusion is likely present . Retrocardiac and right basilar opacities likely reflect atelectasis . There is no pneumothorax . No acute osseous abnormalities identified .
    OUTPUT:
    
Mild pulmonary vascular congestion and probable trace left pleural effusion . Mild bibasilar atelectasis .