Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate normal heart size , mediastinal and hilar contours . Clear lungs . No pneumothorax or pleural effusion . No radiopaque foreign body .
    OUTPUT:
    
No radiopaque foreign body . If concern for foreign body in upper esophagus , lateral neck radiographs should be obtained . If sensation persists can be further evaluated with a barium swallow study . Recommendations were emailed to the ED QA nurses as the patient had already been discharged .