Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Left - sided AICD device is seen with leads in the expected position of the right atrium and right ventricle . There are bibasilar effusions , left greater than right , both of which have slightly increased in size compared to prior study . There is bibasilar atelectasis . The upper lung zones are clear . The cardiac , mediastinal and hilar contours are stable .
    OUTPUT:
    
Slight increase in bibasilar effusions , left greater than right , compared to study on ___ .