Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph was obtained . Cardiomediastinal silhouette is enlarged . Patient is status post median sternotomy . Bibasilar atelectasis and likely effusions are present and similar in extent to the prior radiograph . Mild pulmonary edema may be present . No focal consolidation is present ,
    OUTPUT:
    
Post - op changes with pleural effusions and basilar atelectasis . Please refer to subsequent CT chest for further details .