Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest do not reveal a radiopaque foreign body in the expected location of the esophagus . There is minimal left basilar atelectasis . Otherwise , the lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
No evidence of radiopaque foreign body . No acute cardiopulmonary process .