Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Relatively low lung volumes seen on the frontal exam with secondary bibasilar atelectasis . Superiorly , the lungs are clear . The cardiomediastinal silhouette is within normal limits . Tortuous thoracic aorta is seen with atherosclerotic calcifications at the arch . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .