Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . Cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . A tunneled double channel catheter terminates below the superior cavoatrial junction , as before .
    OUTPUT:
    
No acute cardiopulmonary process . Stable position of the tunneled dual channel central venous catheter terminating below the superior cavoatrial junction .