Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . Lungs are clear . No pulmonary vascular congestion is seen . There is no pneumothorax or pleural effusion . Multilevel degenerative changes in the thoracic spine with anterior bridging osteophytes are again noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .