Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left upper lobe opacity has improved consistent with continued improving pneumonia . There are no new lung abnormalities . Minimal atelectasis in the left base have improved . There is no pneumothorax or pleural effusion . Cardiomediastinal contours are unchanged
    OUTPUT:
    
Improved left upper lobe pneumonia . No new lung abnormalities .