FINDINGS:
The lungs are clear without focal consolidation, effusion, or overt pulmonary
 edema.  The cardiomediastinal silhouette is stable given differences in
 positioning and technique.  Slight compression deformity of a lower thoracic
 vertebral body is unchanged.  Compressed lumbar vertebral body is obscured on
 this image.  There is a sliver of lucency below the left hemidiaphragm on the
 frontal and adjacent to the right hemidiaphragm on the lateral.

IMPRESSION:
No definite acute cardiopulmonary process.
 Sliver of free intraperitoneal air suspected, not unexpected within a few days
 after intra-abdominal surgery.