Ectopic Functioning Thyroid Tissue in the Thyroglossal Duct Detected by Radionuclide Imaging

Rao, P. Nageswara; Pandit, Nandini; Kumar, Rajesh; Upadhya, Indira; Sagar, Maddani Shanmukhappa

doi:10.1097/01.rlu.0000174206.05098.fe

Cited by 14 publications

(11 citation statements)

References 4 publications

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“…These include remnants (cysts) of the thyroglossal duct, being usually asymptomatic (28). On histological examination, ectopic thyroid may be found within the wall of the cyst with an overall frequency of !5%.…”

Section: Other Sitesmentioning

confidence: 99%

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Ectopic thyroid tissue: anatomical, clinical, and surgical implications of a rare entity

Noussios

Anagnostis²,

Goulis³

et al. 2011

European Journal of Endocrinology

312

429

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Ectopic thyroid tissue is a rare entity resulting from developmental defects at early stages of thyroid gland embryogenesis, during its passage from the floor of the primitive foregut to its final pre-tracheal position. It is frequently found around the course of the thyroglossal duct or laterally in the neck, as well as in distant places such as the mediastinum and the subdiaphragmatic organs. Although most cases are asymptomatic, symptoms related to tumor size and its relationship with surrounding tissues may also appear. Any disease affecting the thyroid gland may also involve the ectopic thyroid, including malignancy. The clinician must distinguish between ectopic thyroid and metastatic deposits emerging from an orthotopic gland, as well as other benign or malignant masses. Thyroid scintigraphy plays the most important role in diagnosing ectopy, but ultrasonography contributes as well. In cases of symptomatic disease, surgery is the treatment of choice, followed by radioiodine ablation and levothyroxine suppression therapy in more refractory cases. This review provides current understanding about the wide clinical spectrum of this rare condition, also referring to optimal diagnostic approach, differential diagnosis, and management strategies.

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Section: Other Sitesmentioning

confidence: 99%

“…On histological examination, ectopic thyroid may be found within the wall of the cyst with an overall frequency of !5%. It produces thyroid hormones, but the concentrations are usually subnormal and patients may be hypothyroid (28,29). Hashimoto's thyroiditis (30) and papillary carcinoma (31) have also been described.…”

Section: Other Sitesmentioning

confidence: 99%

Ectopic thyroid tissue: anatomical, clinical, and surgical implications of a rare entity

Noussios

Anagnostis²,

Goulis³

et al. 2011

European Journal of Endocrinology

312

429

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“…ETT can be seen at any localization on the middle neck line, from the tongue root to the mediastinum [4][5][6]. Its prevalence is approximately 1/100.000-1/300.000.…”

Section: Discussionmentioning

confidence: 99%

“…Thin-needle aspiration biopsy was performed in order to help preoperative diagnosis and its result revealed intensive colloid and mostly isolated rare thyrocid groups (Figure 3). The patient's ectopic thyroid tissue was totally excised by dissecting it from the surrounding tissues under general anesthesia ( Figure 4,5). No complications were seen postoperatively and the histopathology results indicated nodular goiter rich in colloid, showing different sizes, with follicles containing single file epithelium, and displaying no findings in favor of malignancy ( Figure 6).…”

Section: Case Reportmentioning

confidence: 99%

Giant Thyroid Nodule Atypically Located in The Carotid Triangle of The Neck: A Case Report

Beriat¹

2016

Ann Clin Anal Med

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ÖzetEktopik tiroid dokusu tiroid dokusunun anormal migrasyonuyla oluşan nadir görü-len bir tiroid patolojisidir. Yaklaşık olarak 100,000-300,000 doğumda bir görülür ve genellikle asemptomatiktir. Tiroid doku hiperplazisine bağlı olarak, asemptomatik ektopik tiroid dokusu büyüyerek boyun kitlesi şeklinde semptomatik hale gelebilir. Trakea önündeki normal lokalizasyonu dışında tiroid bezi, dil kökü ile trakea arasında genellikle orta hatta herhangi bir seviyede görülebilir. 71 yaşında erkek hasta, boyun sağ tarafında, sağ karotid üçgende 5x4x3 cm boyutlarında kitle ile kulak burun boğaz polikliniğimize başvurdu. Yapılan ince iğne aspirasyon biyopsisi sonucu tiroid dokusu olarak rapor edildi ve takiben kitle genel anestezi altında eksize edildi. Yapılan patolojik değerlendirmesi sonucunda kitlenin atipik olarak yerleşim gösteren ektopik yerleşimli tiroid nodülü olduğu anlaşıldı. Hastanın yapılan bir yıllık takibinde herhangi bir komplikasyonla karşılaşılmadı. Anahtar KelimelerEktopik Tiroid Dokusu; Karotid Üçgen; Tiroid Nodülü AbstractEctopic thyroid tissue is a rare pathology of the thyroid that is formed by the abnormal migration of the thyroid tissue. It is seen once in about every 100.000 to 300.000 births and is generally asymptomatic. Asymptomatic ectopic thyroid tissue may grow larger and become symptomatic in the form of a neck mass due to thyroid tissue hyperplasia. The thyroid gland, apart from its normal localization before the trachea, may lie between the tongue root and the trachea generally on the middle line at any level. A 71-year-old male patient presented to our ear-nose and throat clinic with a mass of 5x4x3 cm located in the right carotid triangle. The thin-needle aspiration biopsy specimen was reported as thyroid tissue and subsequently the mass was excised under general anesthesia. The histopathological evaluation of the mass revealed that it was an atypically located ectopic thyroid nodule. No complications were seen within one year follow-up of the patient.

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“…Of all ectopic thyroids 90% are found to be lingual thyroids [4]. Very rarely, two ectopic foci may be present simultaneously [5,6]. Approximately two thirds of the patients with lingual thyroid lack thyroid tissue in neck.…”

Section: Introductionmentioning

confidence: 99%

Lingual Thyroid Causing Dysphagia: A Case Report and Review of Literature

Ralli¹,

Singh²,

Parmar³

et al. 2016

J Cytol Histol

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Ectopic Functioning Thyroid Tissue in the Thyroglossal Duct Detected by Radionuclide Imaging

Cited by 14 publications

References 4 publications

Ectopic thyroid tissue: anatomical, clinical, and surgical implications of a rare entity

Ectopic thyroid tissue: anatomical, clinical, and surgical implications of a rare entity

Giant Thyroid Nodule Atypically Located in The Carotid Triangle of The Neck: A Case Report

Lingual Thyroid Causing Dysphagia: A Case Report and Review of Literature

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