Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior chest radiographs ___ ___ , a left basal opacity has improved however a right basilar opacity has developed . Patchy opacities in the upper lobes have slightly increased compared to the ___ radiograph but were present in ___ . The aorta is ectatic and calcified . The trachea is deviated to the right . The heart size is normal .
    OUTPUT:
    
Compared to the prior radiograph ___ ___ , a left basal opacity has improved and a right basal opacity has developed representing edema or infection .