Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is subtle increased opacity in the left mid lung seen posteriorly on the lateral view . Elsewhere , there is no confluent consolidation nor effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified .
    OUTPUT:
    
Subtle opacity in the left lower lobe compatible with pneumonia in the proper clinical setting . Recommend repeat after treatment to document resolution .