FINDINGS:
Heart size is mildly enlarged.  The mediastinal and hilar contours are
 unremarkable.  Pulmonary vasculature is not engorged.  Focal opacity within
 the left lower lobe is concerning for pneumonia combined with partial
 collapse.  Minimal patchy opacity in the right lower lobe may also reflect an
 additional site of infection.  There is no pleural effusion or pneumothorax. 
 No acute osseous abnormalities seen.  Clips in the right upper quadrant
 abdomen indicate prior cholecystectomy.

IMPRESSION:
Left lower lobe focal opacity concerning for pneumonia and partial collapse. 
 Patchy right basilar opacity may reflect an additional site of infection. 
 Followup radiographs after treatment are recommended to ensure resolution of
 this finding.