Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated . Heart size is normal . Mediastinal and hilar contours are unremarkable . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . There are mild multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .