Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no effusion or pneumothorax based on this supine film . Cardiomediastinal silhouette is within normal limits for technique noting a tortuous descending thoracic aorta . Calcifications noted at the aortic arch . No displaced fractures identified .
    OUTPUT:
    
No acute cardiopulmonary process .