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
Carcinoma thyroid localized and well differentiated, treatment consists of 
Select and explain. 
A. Near total thyroidectomy, radioisotope, B. Subtotal thyroidectomy with external beam irradiation, C. Near total thyroidectomy, iodine, external beam irradiation, D. Total thyroidectomy, external beam radiation, life long eltroxin
A: Near total thyroidectomy, radioisotope
Answer: A: Near total thyroidectomy, radioisotope 
Explanation: The primary treatment of DTC (differentiated thyroid cancer) , is surgical ablation. The other mainstays of therapy are RAI ablation and TSH suppression. A patient diagnosed with PTC will undergo either total or near-total thyroidectomy as the preferred initial treatment. Therapeutic neck dissection is performed with initial thyroidectomy for patients with PTC with neck node metastasis. Adjuvant therapy includes postoperative TSH suppression with thyroxine therapy. If the patient is considered low risk, TSH levels are acceptable into the low range of normal. High-risk patients are often maintained at <=0.1 mIU/L. Postoperative radioactive abalation is reserved for patients with high-risk PTC or patients with a diagnosis of follicular or HCC (huhle cell cancer). External beam radiation therapy is used in patients with reccurrence or metastasis that is not amenable to surgery. Also is tried in patients with anaplastic carcinoma. Source : Devita Principles of Oncology 10th edition : Pg 1182