Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall basal nerve stimulator is in place with apparently intact lead ascending into the left neck . Lung volumes are slightly low but clear . Heart size is normal . Mediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .