Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged , with the heart size within normal limits . Rightward tracheal deviation due to a left superior mediastinal mass compatible with a multinodular goiter is re - demonstrated . The lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is seen . There are mild degenerative changes in the thoracic spine . Mild dextroscoliosis of the thoracic spine is again demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .