Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The ascending aorta remains tortuous and the descending thoracic aorta is unfolded . Pulmonary vasculature is not engorged . Emphysema is re - demonstrated with hyperinflation of the lungs . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .