An immunohistochemistry report (thyroglobulin, PAX8, TTF1, Ck7, and even lymphoma immune phenotyping) [55] adds value in confirming the thyroid profile in EMTs, especially in cases when pre-operatory or pre-biopsy investigations (particularly, iodine or 99m-Tc scintigraphy) were not consistent with a confirmation of ectopic thyroid tissue or in subjects suspected or confirmed with other malignancies [186,187,188,189,190]. Here, TG is linked to lymphoma.