Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly unfolded . Pulmonary vascularity is normal and the hilar contours are within normal limits . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . Mild degenerative changes are seen within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .