Dual Thyroid Ectopia with Changes of Colloid Goitre – A Rare Case Report

Ectopic thyroid is a rare entity, and simultaneous presence of ectopic thyroid gland at two different sites is even rarer with only 42 reported cases in world literature. We report a case of a 14-year-old girl with dual thyroid ectopia at the base of tongue and at the level of hyoid bone. The patient presented with a midline swelling in the neck with hypothyroidism. High-resolution ultrasonography of the neck revealed absence of thyroid tissue in its normal location and presence of thyroid tissue with changes of adenomatous colloid goiter at the level of hyoid bone. A technetium 99-m pertechnetate scan revealed two hyperfunctioning foci of ectopic thyroid tissue − one at the base of the tongue and other at the level of the hyoid bone.