Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the most recent prior study , there is increased opacification of the right mid and lower lung zones compatible with a large pleural effusion . Known hilar and mediastinal lymphadenopathy is better characterized on PET - CT of ___ . The left lung is relatively clear with stable areas of parenchymal scarring and scattered calcified pleural plaques . No pneumothorax is detected . The cardiomediastinal silhouette is unchanged . The trachea is midline .
    OUTPUT:
    
Increased size of large right pleural effusion with right lung opacification suggesting atelectasis or consolidation .