Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and cardiac valve replacement . There are trace bilateral pleural effusions with overlying atelectasis . Basilar opacopacities may represent atelectasis but consolidation due to infection or aspiration is not excluded . The cardiac silhouette remains top - normal . No overt pulmonary edema is seen . There is no pneumothorax .
    OUTPUT:
    
Small bilateral pleural effusions . Basilar opacities could relate to atelectasis however , consolidation due to infection or aspiration not excluded .