<prompt> Traetment of Medullary Carcinoma thyroidSurgery and RadioiodineRadiotherapy and chemotherapySurgery onlyRadioiodine ablation  <response>: In medullary carcinoma thyroid , total thyroidectomy is treatment of choice. Radiotherapy can be considered in unresectable cases or after complete surgical resection in few cases. Note : Since medullary thyroid cancer doesnot arise from follicular cells, TSH suppression and RAI radio active iodine therapy have no role. Source : Sabiston 20th edition pg 910 