Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is slight increase in right hilar enlargement . Left hilar enlargement is unchanged . There is no major mediastinal lymphadenopathy . Right upper lobe scarring is unchanged . There is a 7 mm round hyperdensity in the left upper lobe , of uncertain etiology and doubtful clinical significance . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal .
    OUTPUT:
    
1 . Slight increase in right hilar lymphadenopathy , stable left hilar lymphadenopathy . 2 . No suspicious pulmonary nodules are visualized . If concern for small nodules , CT would be required .