Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and aortic valve replacement procedure . Cardiomediastinal contours are stable in the postoperative period . Persistent small bilateral pleural effusions and adjacent basilar atelectasis , slightly improved on the right . No pneumothorax . Multiple healed rib fractures are incidentally noted .
    OUTPUT:
    
Small bilateral pleural effusions and adjacent basilar atelectasis , right greater than left .