Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right Hickman catheter terminates at the proximal right atrium , in unchanged position . The lungs are clear without focal consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is mildly enlarged , as before .
    OUTPUT:
    
Right Hickman catheter terminates at the proximal right atrium , as before .