Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter terminates in the low SVC just above the superior cavoatrial junction . No pneumothorax . There has been interval removal of the Swan - Ganz catheter . Postoperative mediastinum and cardiac borders are stable . Lung volumes are low with increased bibasilar atelectasis and residual small left pleural effusion .
    OUTPUT:
    
Right internal jugular central venous catheter terminates in the low SVC just above the superior cavoatrial junction . No pneumothorax .