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
[{'content': 'Most common cause of respiratory disease after thyroidectomy is? \nSelect and explain. \nA. B/L Recurrent laryngeal nerve palsy, B. Tension hemotoma, C. Laryngeal edema, D. Hyperparathyroidism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Laryngeal edema is the most common cause of post - operative respiratary distress after thyroidectomy.', 'role': 'assistant'}]