Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged . The pulmonary vascularity is not engorged . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Multilevel degenerative changes are re- demonstrated within the thoracic spine as well as and S shaped thoracolumbar scoliosis .
    OUTPUT:
    
No acute cardiopulmonary abnormality .