Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The trachea is poorly delineated . Allowing for this , the tip of the ET tube lies approximately 4 .6 cm above the carina . An NG type tube is present , extending beneath the diaphragm , off the film . A right IJ central line is again seen , tip overlying mid SVC . The cardiomediastinal silhouette is unchanged . Allowing for low lung volumes , no definite CHF . Bibasilar atelectasis . No gross effusion . No pneumothorax detected .
    OUTPUT:
    
ET tip approximately 4 .6 cm above the carina . There is some obscuration of the tracheal air column and proximal left mainstem bronchus distal to this . Low lung volumes with bibasilar atelectasis . Atelectasis .