ECE2023 Eposter Presentations Thyroid (128 abstracts)
A rare diagnosis of lateral Neck Mass
Houas Jihene 1,2 , Ben Arfi Taissir 2 , Ghammam Monia 2 , BelHadjMiled Heyfa 2 , El Omri Malika 2 , Bellakhdher Mouna 2 , Hasni El Abed Yosra 3 , Meherzi Abir 2 , Kermani Wassim 2 & Abdelkefi Mohamed 2
1ENT and Cervicofacial Surgery Department Farhat Hached Hospital University, Sousse, Tunisia, 2ENT Department and Neck Surgery of Farhat Hached Hospital, Sousse, Tunisia, 3Endocrinology Department Farhat Hached Hospital, Sousse, Tunisia
Introduction: Ectopic thyroid is characterized by thyroid tissue in a location other than anterior to the upper tracheal rings. The estimated incidence of thyroid ectopia is approximately 1/100,000. The most frequent locations are along the midline from the base of the tongue (90%) to the mediastinum. Ectopic thyroid tissue in the lateral neck is rare. We present a case of an ectopic thyroid gland with an atypical presentation as a lateral neck mass.
Case presentation: A 45 year old woman, with no significant past medical history, who presented with complaints of a painless lateral neck mass for the past 1 year exhibiting rapid progression since the past 3 months. There was no dysphagia, dyspnea or hoarseness of voice. Physical exam was notable for a painless, mobile, 3.5 cm mass, right supraclavicular, rubbery that was not fixed to the overlying skin. There was no cervical lymphadenopathy noted in the left neck or beyond the apparent right supraclavicular neck mass. The thyroid was normal. The neck ultrasound was performed revealing an anechoic liquid mass with a honeycomb structure that was well limited, measuring 42mm and hypervascular on color Doppler. The thyroid bed was scanned and it showed a normal thyroid gland. The CT scan of the neck was in favor of cystic lymphangioma. Her laboratory tests were normal. The mass was surgically removed. The extemporaneous examination of the specimen was benign. The definitive pathological examination indicated a benign thyroid tissue with no evidence of malignancy. Immunohistochemical staining showed the expression of TTF1, Thyroglobulin, Cytokeratin19 yet no expression of Galectin3. The diagnosis of Ectopic thyroid tissue was confirmed.
Conclusion: The presence of thyroid ectopia can create a complicated clinical scenario but can be elucidated through the use of basic radiographic and histologic analyses. Conservative management remains a legitimate option for many patients, with surgical intervention reserved for severe symptoms or malignancy.
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Endocrine Abstracts
ISSN 1470-3947 (print) | ISSN 1479-6848 (online)
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