Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post prior median sternotomy . The tip of the right internal jugular central venous catheter extends to the cavoatrial junction . Low bilateral lung volumes with unchanged moderate bilateral effusions and subjacent atelectasis . No pneumothorax identified . The size and appearance of the cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
No significant interval change since the prior exam .