Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph performed six hours earlier , there is improved aeration of the right upper lung zone . The right - ward shift of the mediastinum has decreased . In the newly aerated upper lung , interstitial prominence is present which could be lymphangitic engorgement or rexpansion edema . Severe volume loss persists with an associated right lower lobe consolidation and pleural effusion . The left lung is essentially clear . The heart size is difficult to evaluate due to loss of the right heart border . There is no evidence of pneumothorax .
    OUTPUT:
    
1 . Improved aeration in the right upper lung zone with decreased rightward shift of the mediastinum . Interstitial prominence in the newly aerated lung may be due to lymphangitic engorgement or edema . 2 . Right pleural effusion , right lower lung consolidation and associated severe volume loss persist .