Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is increased aeration at the left lung base . There is no significant change in the large conglomerates of fibrosis and lymphadenopathy in both mid lungs . There is no new focal consolidation . No pleural effusion or pneumothorax is seen . Heart size is normal .
    OUTPUT:
    
Improved aeration at the left lung base . Unchanged fibrotic conglomerates and lymphadenopathy in both mid lungs , consistent with history of sarcoidosis .