Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval endotracheal tube placement with tip terminating 6 .5 cm above the carina . There is , otherwise , no significant interval change compared to exam from three and a half hours prior .
    OUTPUT:
    
Endotracheal tube in appropriate position 6 .5 cm above the carina . Otherwise , no significant interval change compared to exam three and a half hours prior .