Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Postoperative mediastinum with median sternotomy wires in place and multiple surgical clips . Heart size is normal . Diffuse right greater than left opacities have progressed compared to prior study in the background of emphysema . No large pleural effusion or pneumothorax .
    OUTPUT:
    
Diffuse right greater than left pulmonary opacities likely representing pulmonary edema in the background of severe emphysema .