Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient status post fundoplication . Cardiomediastinal contours are unremarkable . Bilateral low lung volumes . Lungs are clear . No pleural effusion . No pneumothorax or pneumoperitoneum in this single portable upright radiograph . NG tube courses beyond the diaphragm and likely terminates in the stomach . Epidural catheter in standard position . Suture lines visualized .
    OUTPUT:
    
No pneumothorax or pneumoperitoneum noted in this particular portable upright radiograph . Lines in expected positions .