FINDINGS:
There is subdiaphragmatic free air underlying the left hemidiaphragm.
 Otherwise the lungs are well-expanded. There is interval increase in coarse
 interstitial markings.  A tiny patchy opacity in the left lower lung, adjacent
 to the left cardiac margin is present. There is no pleural effusion.
 Cardiomediastinal and hilar contours are unremarkable. There is no pleural
 effusion or pneumothorax.

IMPRESSION:
1.  Intra-abdominal free air.
 
 2.  Interstitial pulmonary edema.  Small patchy opacity in the left lower lung
 may represent aspiration versus consolidation.