Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . The lungs are clear . There is no effusion or pneumothorax . The cardiomediastinal silhouette is within normal limits . Scattered atherosclerotic calcification seen at the aortic arch . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .