Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are decreased compared to the prior exam . Diffuse interstitial abnormality with ill - defined small nodules is most pronounced in the lung bases , findings compatible with bronchiectasis with chronic peribronchial inflammation . Worsening bibasilar airspace opacities could reflect superimposed acute infection or exacerbation of underlying airways disease . There is no pneumothorax . Blunting of the right costophrenic angle likely reflects chronic pleural thickening . The cardiac silhouette size is normal . Mediastinal and hilar contours remain enlarged , as noted on the prior CT , at which time lymphadenopathy was identified in these regions . There is crowding of the bronchovascular structures . No acute osseous abnormality is identified .
    OUTPUT:
    
1 . Worsening bibasilar airspace opacities superimposed on a background of chronic bronchiectasis and peribronchial inflammation likely reflect a superimposed acute infectious process , although progression or exacerbation of underlying chronic ___ infection may be present . 2 . Unchanged mediastinal and hilar lymphadenopathy .