Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated but clear . Calcific density seen in the retrosternal clear space superiorly on the lateral view is seen to be vascular nature on prior CT scan . The cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications are noted at the aortic arch . Hypertrophic changes are noted in the spine . Old right lateral rib fractures are also noted .
    OUTPUT:
    
No acute cardiopulmonary process .