Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube has moved distally compared to the prior study , with the tip approaching the ostia of the right main stem bronchus . Nasogastric tube tip is within the stomach . The cardiac , mediastinal and hilar contours are unchanged , with calcification of the thoracic aorta . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous findings .
    OUTPUT:
    
Endotracheal tube tip approaches the ostia of the right main stem bronchus , and should be retracted . Findings discussed by phone with Dr . ___ at 9 :56 p .m . , ___ .