Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement of middle to upper left lung consolidations when compared to ___ study and normalization of mediastinal structures ( previously with a leftward shift ) . There is stable bilateral lower lobe reticulations compatible the patient 's known interstitial lung disease . The cardiomediastinal silhouette is mildly enlarged and stable from previous studies .
    OUTPUT:
    
Significant improvement of middle to upper left lung consolidation and stable bilateral lower lobe reticular pattern consistent with known interstitial lung disease .