Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased opacities in left upper lobe correspond to the findings on the CT from the same day and are compatible with pneumonia . The right lung is clear . Cardiac size is normal . There is no pleural effusion , pulmonary edema or pneumothorax .
    OUTPUT:
    
Left upper lobe pneumonia . Findings discussed with ___ at 12 :45 a .m . via telephone .