FINDINGS:
There is increased opacity at the left infrahilar region concerning
 for infection versus aspiration.  The lungs are slightly hyperinflated.  There
 is no evidence of pneumothorax or pleural effusions.  The heart is normal in
 size.  There is no evidence of pneumoperitoneum.  The visualized osseous
 structures are grossly unchanged.

IMPRESSION:
Increased opacity and haziness at the left infrahilar region
 concerning for acute infection versus aspiration.