Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The vagus nerve stimulator is again seen in the left chest wall , and is without evidence of lead fracture . The lungs are clear bilaterally , without focal consolidations , pleural effusions or pneumothorax . The mediastinum , hila and heart are within normal limits . Mild dextroscoliosis , unchanged from prior . No acute osseous abnormalities .
    OUTPUT:
    
Vagus nerve stimulator is appropriately positioned , without evidence of lead fracture .