FINDINGS:
The lungs are well expanded.  The right lung is clear.  There is an
 opacity blunting the left costophrenic angle which is confirmed in the lateral
 view without clear fluid meniscus.  The remaining of the left lung is clear. 
 The cardiomediastinal and hilar contours are unremarkable.  There is no
 evident pleural effusion or pneumothorax.

IMPRESSION:
New opacity blunting the left costophrenic angle raising concern
 for left lower lobe pneumonia.