Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unremarkable , with atherosclerotic calcifications noted throughout the thoracic aorta . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is demonstrated . There is diffuse demineralization of the osseous structures with apparent ossification of the anterior longitudinal ligament .
    OUTPUT:
    
No acute cardiopulmonary abnormality .