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-erect position . Comparison is made with the next preceding similar study obtained one and a half hours earlier during the same day . During the interval , an NG tube has been placed but is seen to reach well below the diaphragm , pointing in the stomach in the direction towards the pylorus . No interval changes are seen on the portable chest examination in comparison with the preceding study .
    OUTPUT:
    
Appropriate position of NG tube .