Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The mediastinal and hilar contours are unchanged , and there is no pulmonary vascular engorgement . Lungs are clear . No pleural effusion or pneumothorax is seen . There is mild loss of height of a vertebral body at the thoracolumbar junction which is unchanged .
    OUTPUT:
    
No acute cardiopulmonary abnormality .