Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta remains mildly tortuous . Fullness of the right hilum is unchanged , compatible with underlying lymphadenopathy . Previously noted enlargement of the right mediastinal contour at the level of the azygos is less pronounced on the current study suggesting somewhat improved lymphadenopathy . The lungs are hyperinflated . The pulmonary vascularity is not engorged . Extensive emphysematous changes are again noted , most pronounced within the lung apices . Nodular opacity within the posterior aspect of the right upper lobe is not as clearly visualized on the current study . There is no new focal consolidation . Linear atelectasis or scarring is seen within the lung bases . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . Previously noted mediastinal lymphadenopathy may be slightly improved . Fullness of the right hilum is unchanged and reflective of known lymphadenopathy . 2 . Emphysema . 3 . Known nodule within the right upper lobe is better seen on the prior exams .