Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . In comparison to prior study from ___ , there is significant improvement in the postoperative appearance of the right hemithorax . There are residual scars in the right lung base , mild pleural thickening , and continued elevation of the right hemidiaphragm . Pulmonary vasculature is normal . Trace bilateral pleural effusion is seen . Heart size has substantially decreased in size .
    OUTPUT:
    
Substantial improvement in the post-operative appearance .