Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right lung is fully expanded . No new focal opacity in either lung . Increased , moderate left pleural effusion with associated lower lobe atelectasis . Heart size is likely mildly enlarged . Cardiomediastinal and hilar silhouettes are stable . Left pectoralis dual - chamber cardiac pacemaker and leads are unchanged . Lower thoracic spine compression deformity is unchanged since ___ .
    OUTPUT:
    
Increased , moderate left pleural effusion .