Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes seen on this current exam accentuating the findings on prior including bilateral parenchymal opacities most conspicuous at the right lung apex and left midlung . The cardiomediastinal silhouette is unchanged . Dense atherosclerotic calcifications noted in the thoracic aorta . Metallic densities projecting over left lung apex are again noted .
    OUTPUT:
    
Chronic changes in the lungs without definite superimposed acute cardiopulmonary process .