IMPRESSION:
AP chest compared to  postoperative chest
 radiograph , :43 p.m.:
 
 Since , fluid has begun to accumulate in the left hemithorax and the
 mediastinum has partially returned to the midline.  Left pleural drain is in
 place.  The lobulated left mediastinal contour is unchanged.  This
 configuration could be due to augmentation of the left bronchial stump by
 relatively large volume of tissue such as omentum or subphrenic fat, or it
 could be due to large burden of clot.  Dr.  was paged at 11:00 a.m.,
 when the findings were recognized.
 
 The right lung is low in volume but clear.  Subcutaneous emphysema in the left
 chest wall is new, probably a function of accumulating fluid in the left
 pleural space, displacing air.  An epidural catheter is at the T2-T3 level. 
 The heart size is obscured by the mediastinal abnormality described, but there
 is no evidence of cardiomegaly.