Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged but unchanged . The aorta is slightly unfolded . Mediastinal and hilar contours are otherwise unremarkable . The pulmonary vascularity is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Compression deformities of 2 lower thoracic vertebral bodies are unchanged .
    OUTPUT:
    
No acute cardiopulmonary abnormality .