Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single frontal chest radiograph demonstrates obliquely oriented stent across the upper mediastinum , likely within a left subclavian vessel . Left - sided subclavian Port - A - Cath terminates in the right atrium . Cardiomediastinal and hilar contours are unremarkable . The lungs are clear . No pleural effusion or pneumothorax identified .
    OUTPUT:
    
No acute intrathoracic process . Left subclavian dialysis catheter terminates in right atrium .