Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were provided . There is no focal consolidation , pleural effusion or pneumothorax . Lung volumes are slightly low . The cardiomediastinal silhouette is notable for a tortuous aorta . The bones are intact without evidence of displaced rib fractures . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process or displaced rib fracture .