IMPRESSION:
AP chest compared to  at 4:21 p.m.:
 
 New endotracheal tube ends at the level of the aortic apex, between 4.5 cm
 from the carina, in standard placement.  Lungs are low in volume but clear. 
 Moderate cardiomegaly is stable.  There is no pleural abnormality or evidence
 of central lymph node enlargement.  Thoracic aorta is heavily calcified but
 not focally dilated.