Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Worsening opacification in the left lower lobe consistent with pneumonia . There is associated small left pleural effusion . There is no pneumothorax . Stable scarring is again noted in the right upper lobe . The cardiomediastinal and hilar contours are normal .
    OUTPUT:
    
Left lower lobe pneumonia . Repeat chest ___ after treatment to document resolution .