Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided chest wall vagal nerve stimulator is in unchanged position . The cardiomediastinal and hilar contours are grossly stable . Lungs are clear without focal consolidation , pleural effusion or pneumothorax . The aorta is unfolded as before .
    OUTPUT:
    
No acute cardiopulmonary process .