Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is a large right - sided pneumothorax with essentially complete collapse of the right lung . There is hyperexpansion of the right thoracic cavity with increased intercostal distance and leftward shift of the mediastinum . The left lung is clear . No acute osseous abnormality detected .
    OUTPUT:
    
Large right pneumothorax with complete collapse of the right lung with signs of tension . At time of dictation , chest tube had already been placed .