Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic right - sided pleural effusion appears unchanged compared to ___ . However , there is new pulmonary vascular congestion , and increased density at the lung bases which may reflect increasing pleural fluid bilaterally or possibly bilateral atelectasis or pneumonia . Mediastinal contours appear within normal limits . Perihilar enlargement and indistinctness corresponds with edema . Evaluation of the cardiac silhouette is limited due to bibasalir opacities . There is no pneumothorax .
    OUTPUT:
    
1 . Chronic right pleural effusion . 2 . No new pulmonary vascular congestion and probable increasing bilateral pleural effusions . 3 . Bibasilar consolidations may reflect compressive atelectasis , though aspiration or pneumonia should also be considered .