Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Relatively low lung volumes are again seen . The lungs are clear of focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is within normal limits . Left shoulder arthroplasty changes are partially visualized . Dense atherosclerotic calcifications seen in the thoracic aorta .
    OUTPUT:
    
No acute cardiopulmonary process .