CONCLUSIONS
CBS is an uncommon yet detrimental complication encountered in head and neck cancer patients, especially with a history of radiotherapy and radical neck dissection. It is an emergency which necessitates the use of angiography for diagnosis, and in most cases for treatment. However, surgical ligation could still be a treatment option. Since, it has a high mortality and neurologic morbidity, preventing CBS would be the most effective treatment method, especially in patients with soft tissue exposure, necrosis and fistula because the countdown is approximately set to 4 months.