Dual Ectopic Thyroid / 대한이비인후과학회지

ABSTRACT

Dual ectopic thyroid is an uncommon entity and seven cases have been reported in the literature. Clinically, most cases in ectopic thyroid were noted at adolescence or postpartum due to increased physiologic hormonal demands. The sublingual area is the most common site of ectopic thyroid tissue, accounting for 90% of the cases, followed by the area in high cervical thyroid. Clinical manifestation, thyroid function test, and radiologic imaging should be employed for making diagnosis and therapeutic plan of this disease. The primary therapeutic goal is to restore the thyroid function. We describe a patient with dual ectopic thyroid tissue in the sublingual and subhyoid area.