Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . On the frontal view only , subtle opacity is noted in the left mid and lower lung which could in the correct clinical setting represent pneumonia . The right lung is clear . There is no effusion or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Subtle opacity in the left mid and lower lung , may represent pneumonia in the correct clinical setting .