Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous radiograph performed around a year ago , there is no change in extent , distribution and severity of the pre-existing changes . Most importantly , there is no progression of the fibrotic disease component . Hilar enlargement with streaks of parenchymal structures connected to extensive upper lobe changes . The heart appears normal . No pleural effusions .
    OUTPUT:
    
Unchanged as compared to ___ . No progression of disease .