PLE-21
A thoracic surgeon removed the right middle lobar bronchus, along with lung tissue, from a 57-year-old heavy smoker with lung cancer. Which of the following bronchopulmonary segments must contain cancerous tissues?
A thoracic surgeon removed the right middle lobar bronchus, along with lung tissue, from a 57-year-old heavy smoker with lung cancer. Which of the following bronchopulmonary segments must contain cancerous tissues?