Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion , focal consolidation or pneumothorax is present . Moderate multilevel degenerative changes are re - demonstrated in the thoracic spine . Cervical fusion hardware is partially imaged .
    OUTPUT:
    
No acute cardiopulmonary abnormality .