FINDINGS:
Subtle patchy lateral left base opacity is nonspecific, but infectious process
 versus scarring may be present.  Some thickening is seen along the major
 fissure on the lateral view, much less likely trace fluid in the fissure.  No
 pleural effusion is seen at the posterior costophrenic angles.  No
 pneumothorax is seen. The cardiac and mediastinal silhouettes are
 unremarkable.  Evidence of DISH is seen along the spine.

IMPRESSION:
Subtle patchy lateral left base opacity is nonspecific, could represent
 infectious process/ pneumonia versus scarring or atelectasis.