Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for the AP technique , cardiomediastinal silhouette is within normal limits . Redemonstrated are bilateral interstitial opacities with lower lobe predominance that are grossly unchanged compared to the prior radiograph , thought to represent NSIP on the most recent CT . There is no consolidation or pleural effusion . No pneumothorax .
    OUTPUT:
    
1 . Persistent bilateral interstitial opacities , grossly unchanged compared to prior examination , and thought to reflect NSIP on previous CT . 2 . No consolidation or pleural effusion .