Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Surgical clips are noted along the left mediastinal border with extensive scarring and upward hilar retraction . There is volume loss in the left lung compatible with prior partial lung resection with partial osteotomy in the left rib cage . There is right hilar prominence and lymphadenopaty can not be excluded . There is no definite sign of pneumonia . Bony structures are intact .
    OUTPUT:
    
Post - surgical changes in the left upper lung . No evidence of pneumonia . Right hilar prominence . Recommend correlation with nonemergent CT .