Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large right pleural effusion and small left pleural effusion , both with overlying atelectasis . Mild fluid overload is demonstrated . The cardiac silhouette remains enlarged . Mediastinal contours are stable . No pneumothorax seen .
    OUTPUT:
    
Bilateral pleural effusions , moderate to large on the right and small on the left , with overlying atelectasis . Mild to moderate pulmonary vascular congestion .