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 . Comparison is made with the next preceding similar study obtained two hours earlier during the same day . An NG tube has now been placed , seen to reach below the diaphragm with the line tip and the sidehole overlying the body of the stomach . No significant interval changes are present in the lungs and the previously described left - sided pleural effusion . Unchanged position of right internal jugular approach central venous line .
    OUTPUT:
    
Appropriate position of NG tube .