Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are clear . The cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications seen at the aortic arch . The thoracic aorta is tortuous . Surgical clips seen in the upper abdomen . No acute osseous abnormalities identified .
    OUTPUT:
    
No acute cardiopulmonary process .