Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The cardiomediastinal silhouette is stable . There is tortuosity of the thoracic aorta with atherosclerotic calcifications seen at the aortic arch . Surgical clips in the anterior mediastinum and median sternotomy wires are again noted . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .