Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are within normal limits . There is moderate unfolding of the thoracic aorta , similar in appearance when compared to the prior study . Mild elevation of the left hemidiaphragm , also unchanged . No consolidation , pneumothorax or pleural effusion seen . Moderate degenerative changes throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process seen .