ISSN 1308-8734 | E-ISSN 1308-8742
Case Report
Ectopic Thyroid Tissue in Submandibular and Infrahyoid Region
1 Clinic of Ear Nose and Throat, Ataturk University Faculty of Medicine, Erzurum, Turkey  
Eurasian J Med 2014; 46: 216-219
DOI: 10.5152/eajm.2014.34
Key Words: Ectopic Thyroid, submandibular and infrahyoid space, surgery
Abstract

The thyroid is the first endocrine gland to form during embryogenesis. At this stage, incomplete or anomalous migration of thyroid tissue causes ectopic localization of the gland. Submandibular ectopic thyroid tissue with a coexisting normally located thyroid gland is extremely rare. In this case aimed to present the findings of the 65-years-old female patient who is bilateral subtotal thyroidectomy operation performed for multinodular goiter of 12 years ago. Case, painless mass in the right submandibular and infrahyoid region for 6 months was admitted to our clinic with complaints. Result of contrast-enhanced neck computed tomography, ultrasound-guided fine-needle aspiration biopsy and thyroid scintigraphy were found of functional residual thyroid tissue in the normal localization as well as 2x3 cm mass in the submandibular area and 1x2 cm mass lesion in the infrahyoid region. The patient referred to excisional biopsy. Normal thyroid follicules and no evidence of malignancy were found in specimen pathologically. Postoperative follow-up of thyroid function tests were normal. 

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