RESUMEN
Ectopic thyroid tissue is most commonly located in a single location, this being the lingual area. Presentation with two ectopic thyroid foci is quite unusual. A girl patient aged 7 years who presented with complaints of two masses in the right anterior neck and submandibular area is reported. Her growth pattern and development were normal. The masses were detected to be dual ectopic thyroid glands by ultrasonography, computed tomography and 99m-technetium pertechnetate thyroid scan. The patient also had subclinical hypothyroidism. She was treated with oral levothyroxine and the masses slightly decreased in size. The repeated thyroid function tests were within the normal limits. Thyroid function tests and imaging studies need to be conducted in all patients with anterior neck masses.