Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube remains in good position . There remains mild pulmonary edema with perhaps slight interval improvement of the opacification at the right base with interval faint opacification at the left base . These changes are likely due to positioning of the patient . Cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
1 . No significant interval change . 2 . ET tube in good position .