Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vascularity is normal . The lungs are clear . No pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine . There are no displaced fractures identified .
    OUTPUT:
    
No acute cardiopulmonary process .