Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable in appearance . Right pigtail pleural catheter has apparently been removed since the prior study , and a small - to - moderate right pleural effusion has slightly increased in size . Multifocal linear scar versus atelectasis in the right lung appears unchanged . Linear scarring versus atelectasis in the periphery of the left upper lobe also appears similar compared to the prior study .
    OUTPUT:
    
Increased right pleural effusion .