Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . New opacity in the left upper lobe , is concerning for pneumonia . The right lung is clear , without consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
Left upper lobe pneumonia . Recommended follow up chest radiograph after treatment to document resolution . The findings were e-mailed to the ED ___ nurses on ___ at 10 :20 A .M .