Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed in direct comparison with the next preceding portable supine chest examination obtained 10 hours earlier during the same day . On this portable frontal view , the patient is intubated . The ETT is seen to terminate in the trachea 4 cm above the level of the carina . No pneumothorax is identified . A right internal jugular approach central venous line has been placed . It s tip reaches rather far into the region of the lower SVC and may terminate in the upper portion of the right atrium . Withdrawal of the line by 3 cm is recommended . This chest examination does not demonstrate any new pulmonary abnormalities . The heart size appears unaltered .
    OUTPUT:
    
Appropriate position of ETT 4 cm above level of carina . Consider withdrawal of central venous line by 3 cm .