Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior study , there has been slight interval improvement of the right lower lobe consolidation . However , a right upper lung opacity is more coalescent . The cardiomediastinal and hilar contours are normal . Possible trace right pleural effusion . Otherwise , the pleural surfaces are normal . Stable degenerative changes of thoracic spine .
    OUTPUT:
    
Slight improvement in right lower lung consolidation and minimal worsening of right upper lobe consolidation .