Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta is mildly tortuous . Hilar contours are normal . Lungs are clear . No pleural effusion or pneumothorax is identified . Mild degenerative changes are seen within the thoracic spine with minimal loss of height anteriorly of a mid thoracic vertebral body .
    OUTPUT:
    
No acute cardiopulmonary abnormality .