Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient remains intubated , the tip of the endotracheal tube is positioned no less than 5 .5 cm from the level of the carina . A right IJ sheath remains in place , the tip passes below the level of diaphragm , but is not seen . Bibasilar left greater than right opacity remains , likely reflecting atelectasis . Lung volumes remain low . There is improved mild edema .
    OUTPUT:
    
1 . Unchanged low lung volumes with improving mild pulmonary edema . 2 . Endotracheal tube positioned no less than 5 .5 cm from the level of the carina , which could be advanced for more secure seating .