FINDINGS:
Since , right chest and mediastinal drain tubes have
 been removed.  There is no appreciable pneumothorax.  Left lower lung opacity
 obscuring the left cardiomediastinal border and the left lung base has
 minimally worsened since  and is combination of moderate left
 effusion and left lower lung atelectasis.  Riight basal atelectasis and
 presumed small right pleural effusion is unchanged.  There is no significant
 change in the upper mediastinal.  Right internal jugular sheath has its tip
 ending at the upper SVC.  There is evidence of prior median sternotomy and
 sternal sutures are intact.