Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left costophrenic angle is excluded from view . An NG tube is appropriate . An ET tube is going into the right main stem bronchus and should be withdrawn by 2 .5 cm for optimal position . The partially imaged lungs are clear .
    OUTPUT:
    
The ET tube appears to go in the right main stem bronchus and should be withdrawn by 2 .5 cm . These findings were communicated via telephone with ___ MD at 2 :40 p .m . on ___ after discovery at 2 :33 p .m . on ___ .