Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in size of the right pleural effusion . Persistent collapse of the right middle and lower lobes and mild left basilar opacities may reflect atelectasis . No left pleural effusion or pneumothorax identified . The appearance of the cardiac silhouette is unchanged .
    OUTPUT:
    
Interval increase in size of the right pleural effusion .