Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with paucity of the pulmonary vasculature consistent with known emphysema seen better on prior CT . Stable appearance of postradiation fibrosis in the right upper lobe . The left lung is clear . Cardiomediastinal and hilar contours are stable . Stable calcifications of the aortic arch . The right pleural effusion has worsened with compressive basilar atelectasis . Stable degenerative changes of thoracic spine . .
    OUTPUT:
    
Interval worsening of small to moderate right pleural effusion .