Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , lines and tubes are similar in appearance . Left sided pacemaker with lead tips over the right atrium and right ventricle . Cardiomediastinal silhouette is unchanged as is the elevated left hemidiaphragm . There is atelectasis left lung base , possibly with a small effusion . There is minimal atelectasis the small effusion at the right lung base . Doubt CHF .
    OUTPUT:
    
Compared with 1 day earlier , no definite change is detected . Compared with ___ , the suspected small bilateral effusions with bibasilar atelectasis is new .