Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is tortuous . The pulmonary vascularity is normal . The hilar contours are within normal limits . Lungs are mildly hyperinflated , but are clear without focal consolidation . No pleural effusion or pneumothorax is present . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .