Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were compared to multiple prior plain films dating back to ___ with most recent from ___ in addition to chest CT from ___ . When compared to most recent exam from ___ , there has been interval progression of the airspace disease identified at the left lung base . In addition , there is a new air - fluid level identified in the retrocardiac region . This could potentially represent cavitary pneumonia ; however , may also represent fluid within severely dilated bronchi , noting that this degree of bronvchiectasis was not tin the loated on remote CT scan . COnsolidation with multiple air - fluid levels are identified within the right lung base as well , likely fluid within dilated bronchi as well . Superiorly , the lungs are clear . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
Interval progression of airspace disease , particularly at the left lung base concerning for pneumonia . Superimposed air - fluid level in the left lung base medially , potentially air within enlarged bronchus versus cavitary pneumonia . Multiple air - fluid levels at the right lung base suggestive of fluid within dilated bronchi as demonstrated on previous exam . CT scan would offer additional detail .