Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subpleural opacities at the lung bases are slightly more prominent in comparison to ___ and are consistent with subpleural cysts and pleural thickening . An opacity at the lung base seen on the lateral view is consistent with subpleural cyst formation and interstitial thickening , unchanged from ___ . Heart size is mildly enlarged , unchanged . There is no pneumothorax or definite pleural effusion . A suture chain projecting over the right upper lobe is unchanged . Osseous structures are unremarkable .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Extensive interstitial lung disease is grossly unchanged .