Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Minimal loss of height of a mid thoracic vertebral body is unchanged .
    OUTPUT:
    
No acute cardiopulmonary abnormality .