Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Small left pleural effusion and trace left pleural effusion is unchanged . Opacification of the left lung base is unchanged and likely represents atelectasis . Heart size is top normal . The upper lungs are clear . No pneumothorax .
    OUTPUT:
    
No change in small left pleural effusion with adjacent atelectasis and trace right pleural effusion .