IMPRESSION:
1.  Lines and tubes in satisfactory position.
 
 2.  Status post sternotomy, with interruption of the third from top sternal
 wire.  Clinical correlation is requested.  
 
 3.  Increased retrocardiac density, worse compared with one day earlier,
 raising the question of left lower lobe collapse and/or consolidation.  Note
 is made that the left hemidiaphragm is elevated.