FINDINGS:
The heart is of normal size.  The aorta is mildly unfolded. 
 Cardiomediastinal contours are otherwise normal.  Pulmonary vasculature is
 unremarkable.  The lungs are clear without focal or diffuse abnormality.  No
 pleural effusion or pneumothorax.  No radiopaque foreign body.  Osseous
 structures are unremarkable.

IMPRESSION:
No acute cardiopulmonary process.