FINDINGS:
There is background hyperinflation, with flattening of the diaphragms.  Heart
 size is at the upper limits of normal.  Aorta is minimally unfolded.  Within
 the limits of plain film radiography, no hilar or mediastinal lymphadenopathy
 is detected.  No CHF, focal infiltrate, effusion, or pneumothorax is detected.
 Mild degenerative changes of the thoracic spine are noted.  No free air seen
 beneath the diaphragms.

IMPRESSION:
No acute pulmonary process identified.