Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval improvement in the right pleural effusion . There is a new well - circumscribed density in the right lower lung zone which represents loculated pleural fluid . The cardiomediastinal and hilar silhouettes are stable . There is no pneumothorax . There is no pleural effusion on the left .
    OUTPUT:
    
Interval decrease in right pleural effusion .