Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a new opacity in the left lower lobe which is consistent with pneumonia . Elsewhere , the lungs remain clear . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
Findings consistent with left lower lobe pneumonia .