This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Blow out carotid is characteristically seen in 
Select and explain. 
A. Sistrunk operation, B. Thyroidectomy, C. Parathyroidectomy, D. Radical neck dissection
D: Radical neck dissection
Answer: D: Radical neck dissection 
Explanation: History of radiation exposure followed by radical neck dissection increases the risk of carotid blowout in head and neck cancers. * Carotid blowout refers to rupture of the carotid and its branches* It is one of the most devastating complications associated with therapy for head and neck cancers * Carotid blowout tends to occur in head and neck cancer, radiation induced necrosis, recurrent tumors or pharynocutaneous fistulas * The clinical signs and symptoms related to rupture of carotid aery have been referred as carotid blowout syndrome* Repoed morbidity and moality rates are 40% and 60% respectively.