TG and metastatic neoplasm: The theoretical goals of adjuvant ablation are (a) to destroy any residual microscopic disease, (b) to enhance sensitivity of diagnostic whole body iodine scan (WBIS) and specificity of serum thyroglobulin (Tg) which facilitates follow-up and early detection of recurrence or metastatic disease, and (c) to use postablative WBIS which is more sensitive than diagnostic WBIS for detection of nodal or distant functioning metastases [9].