Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to same day earlier examination , the endotracheal tube has been advanced forward which now terminates 3 .1 cm cranial to the carina and is in appropriate position . There is otherwise no significant change compared to earlier examination .
    OUTPUT:
    
Appropriate positioning of endotracheal tube with tip positioned 3 .1 cm cranial to the carina .