Accessory thyroid gland

[TA] an isolated mass, or one of several such masses, of thyroid tissue, sometimes present in the side of the neck, or ranging in position from just superior to the hyoid bone (suprahyoid accessory thyroid gland) to the arch of the aorta inferiorly. SYN: glandula thyroidea accessoria [TA], accessory thyroid, prehyoid gland, suprahyoid gland, thyroidea accessoria, thyroidea ima, Wölfler gland.