Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the right internal jugular central venous catheter projects over the superior cavoatrial junction . The patient is status post prior median sternotomy . Low bilateral lung volumes with persisting bibasilar and left mid lung atelectasis . No pleural effusion or pneumothorax identified . The size and appearance of the cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Interval placement of a right internal jugular central venous catheter , the tip projecting over the superior cavoatrial junction . No other significant interval change .