Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . This study was made available for my interpretation , today , ___ at 11 :20 a .m . The patient is status post median sternotomy . Small , right greater than left bilateral pleural effusions are present , better assessed on subsequent CT from ___ , with overlying atelectasis . The cardiac and mediastinal silhouettes are stable . No pneumothorax seen .
    OUTPUT:
    
Bilateral pleural effusions .