Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal in size . Mediastinal and hilar contours are unchanged . Increased interstitial lung markings , primarily at the bilateral bases , are likely due to ground - glass and peribronchiolar opacities described on the most recent CT chest . No new focal consolidation to suggest superimposed infection , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . No acute focal consolidation , pleural effusion , or pneumothorax . 2 . Increased bibasilar interstitial markings , due to chronic lung disease , as described on the prior CT chest .