Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A radiopaque device is seen within the mid-to - lower portion of the thoracic esophagus . There is no pneumomediastinum or pneumothorax . No pleural effusion is seen . The lungs are clear . The heart size is normal . The mediastinal contours are normal . There is no free air under the diaphragm .
    OUTPUT:
    
1 . Radiopaque device within the mid - to - lower thoracic esophagus . 2 . No pneumomediastinum , pneumothorax , or pleural effusion . 3 . Clear lungs .