Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Analysis is performed in direct comparison with the next preceding similar study obtained three and a half hours earlier during the same day . In comparison with the previous examination , an NG tube has been placed and is seen to reach well below the diaphragm . The tip of the NG tube escapes the lower edge of the image .
    OUTPUT:
    
NG tube reaching below diaphragm .