Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and cardiac valve replacement . The right transjugular Swan - Ganz catheter has been removed . There are moderate bilateral pleural effusions with overlying atelectasis . Superimposed infection can not be excluded in the proper clinical context . No pneumothorax identified . The size the cardiac silhouette is enlarged but unchanged .
    OUTPUT:
    
Moderate bilateral pleural effusions with subjacent atelectasis . A superimposed infection can not be excluded in the proper clinical context .