Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable frontal chest radiograph . Endotracheal tube is 2 cm above the carina with the chin down ; a subsequent CXR at 11 :26 PM with the chin in neutral or elevated position shows the tip the standard 4 cm from the carina . The enteric catheter extends below the diaphragm , out of the field of view . The right hilus remains prominent . IMPRESSION :
    OUTPUT:
    
Acceptable endotracheal tube position .