Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , there is new airspace disease in the left mid to lower lung . The right lung is essentially clear with minimal opacity at the right costophrenic angle perhaps slightly increased since prior . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Left lung airspace disease compatible with pneumonia in the proper clinical setting . Repeat after treatment suggested to document resolution .