Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a hazy rounded opacity in the left upper lung zone which is new from the prior chest x-ray and most consistent with pneumonia . The right lung is clear . There is no evidence of edema , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Left upper lobe pneumonia .