Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube is seen within 1 cm of the carina , approaching the right mainstem bronchus . Enteric tube including side - port or below the diaphragm . Low lung volumes are noted with secondary crowding of the bronchovascular markings . The lungs are grossly clear in the cardiomediastinal silhouette is stable .
    OUTPUT:
    
Endotracheal tube within 1 cm of the carina approaching the right mainstem bronchus .