Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are multilevel moderate degenerative changes in the thoracic spine with anterior osteophyte formation .
    OUTPUT:
    
No acute cardiopulmonary abnormality .