Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest x-ray on ___ , there is mild improvement of the opacifications in the upper lobes and right lower lobe . Otherwise , the cardiac silhouette remains normal . The mediastinal and hilar structures are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Slightly improved appearance of scarring and cavitation in the upper lobes and right lower lobe . 2 . Otherwise , stable chest radiograph .