Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is present . No air - fluid levels are noted within the esophagus , and no radiopaque foreign bodies are visualized . Nerve stimulator device pack is seen within the left anterior chest with lead coursing cephalad into the base of the neck .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No radiopaque foreign body .