Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Three portable AP radiographs of the chest were acquired . The first image demonstrates a low position of the endotracheal tube , terminating at the level of the carina . Both subsequent radiographs demonstrate that the endotracheal tube has been withdrawn , with its tip terminating appropriately 6 .0 cm above the level of the carina . A right internal jugular central venous catheter ends within the mid - to - upper right atrium . The lung volumes are low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . There is subsegmental bibasilar atelectasis . Elevation of the right hemidiaphragm obscures evaluation of the right lung base . The heart is normal in size . There is widening of the vascular pedicle , likely due to supine positioning . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
1 . Right internal jugular central venous catheter ends in the right atrium . Re-positioning should be considered . This finding was discussed with Dr . ___ by Dr . ___ at 1 :41 a .m . via telephone on the day of the study , 2 minutes after discovery of the finding . 2 . Low lung volumes with bibasilar atelectasis . 3 . Elevation of the right hemidiaphragm , of uncertain etiology . Considerations included hemidiaphragmatic paralysis or an infectious / inflammatory process in the right upper abdominal quandrant . Clinical correlation is recommended . Impression point # 3 was discussed with Dr . ___ by Dr . ___ at 8 :45 a .m . via telephone on ___ .