This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Blow out carotid is characteristically seen with - 
Select and explain. 
A. Thyroidectomy, B. Radical neek dissection, C. Flap necrosis, D. Sistrunk operation
B: Radical neek dissection
Answer: B: Radical neek 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 artery have been referred as carotid blowout syndrome
• Reported morbidity and mortality rates are 40% and 60% respectively.