Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Little change in the volume loss , opacification , and marked pleural thickening in the left upper hemi thorax . Pleural thickening and scarring at the right upper lung are also similar to prior exam . Heart size is upper limits of normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
No acute pneumonia . No significant changes from prior exam .