Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse interstitial opacification appears improved from the most recent chest radiograph and similar to ___ . There is no pleural effusion or pneumothorax . Increased consolidation in the left upper lobe appears similar . The cardiac silhouette is normal . Prominence of the main pulmonary artery and aortic calcifications are again appreciated . Substantial changes from emphysema .
    OUTPUT:
    
1 . Improving , moderate diffuse interstitial opacification which , appears similar to ___ . 2 . Possible left upper lobe aspiration .