FINDINGS:
Patient is post median sternotomy, mitral replacement.  Left-sided
 defibrillator, with leads in the right atrium and right ventricle, is
 unchanged.  Previously seen ill-defined nodular and hazy opacities in the
 right lung have greatly improved since the radiograph from 2 days prior,
 suggesting these were due to pulmonary edema.  However, persistent opacities
 in the right could be due to residual asymmetric edema or infection.

IMPRESSION:
1.  Significant improvement in asymmetric right lung opacities, suggesting
 they were due to pulmonary edema.
 
 2.  Persistent opacities in the right lung may be due to residual asymmetric
 edema or infection.