Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate chronic appearing opacities in the right lower lobe as well as elevation of the right hemidiaphragm . These findings are consistent with atelectasis / volume loss . The left lung is essentially clear . The cardiac silhouette is normal in size . There is tortuosity of the aorta . In addition , a convex bulge of the left upper mediastinum is once again present , but this is due to vascular structures and aberrant subclavian artery as was seen on the recent CT .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .