Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral pleural effusions , larger on the left than the right . No pneumothorax seen . No evidence of a pneumomediastinum however the small volume of air seen on the prior CT chest is unlikely to be visible on chest radiographs . Pacemaker wires are unchanged in appearance compared to the prior study .
    OUTPUT:
    
Bilateral pleural effusions , larger on the left . The known pneumomediastinum is not visualized on this radiograph .