Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph obtained . The NG tube descends into the left upper quadrant . The tip resides in the expected location of the stomach . The lungs are clear . No pneumothorax or effusion . Cardiomediastinal silhouette is normal . Bony structures are intact . Residual contrast is noted within the kidneys related to CT performed earlier today .
    OUTPUT:
    
Appropriately positioned NG tube .