Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . The cardiomediastinal silhouette is unremarkable . The hilar pleural surfaces are normal . A tunneled dialysis catheter is unchanged in position , terminating in the upper right atrium .
    OUTPUT:
    
No acute cardiopulmonary process . Dialysis catheter is unchanged in position , terminating in the upper right atrium .