This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'Treatment of choice for medullary carcinoma of thyroid is \nSelect and explain. \nA. Total thyroidectomy, B. Paial thyroidectomy, C. I131 ablation, D. Hemithyroidectomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most patients with MTC should undergo at least total thyroidectomy The presence of clinically detectable or ultrasound-detectable disease in the lateral neck warrants total thyroidectomy and level VI and lateral compament nodal dissection. Because MTC is not of follicular cell origin, TSH suppression and RAI scanning and therapy have no role in MTC. Source : Sabiston 20th edition Pg : 910', 'role': 'assistant'}]