Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Mild S - shaped scoliosis of the thoracolumbar spine is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .