Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours are within normal limits . The pulmonary vasculature is not engorged . Lungs are clear . No pleural effusion or pneumothorax is present . S - shaped scoliosis of the thoracic spine is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Mild cardiomegaly .