Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large left tension pneumothorax with shift of the mediastinum to the right and flattening of the hemidiaphragm . The right lung is clear . No pleural effusion or pneumonia .
    OUTPUT:
    
Large left tension pneumothorax . The findings were discussed by Dr . ___ with Dr . ___ on the telephone on ___ at 10 :09 PM , ___ upon discovery of the findings .