Microfollicular adenoma of ectopic thyroid gland masquerading as salivary gland tumor - A diagnostic and therapeutic challenge: A case report

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Abstract

Introduction: Ectopic thyroid tissue may appear in any location along the trajectory of the thyroglossal duct from the foramen cecum to the mediastinum. Rarely, there is incomplete descent of the gland where the final resting point may be high resulting in sublingual ectopic thyroid tissue. Ectopic thyroid tissue carries a low risk of malignancy. Most recently reported neoplasms in ectopic thyroid tissue have been papillary carcinoma of thyroid. Individual case reports of clear cell type of follicular adenoma within the ectopic thyroid tissue have been described in the literature. Case presentation: We present a rare case of microfollicular follicular adenoma in an ectopic sublingual thyroid tissue presenting as submental swelling in a euthyroid 24-year-old Dravidian woman. Conclusion: Findings in this case emphasize that when confronted with a submental/sublingual mass lesion, the evaluation of thyroid function tests and ultrasonography of the neck should be included in a pre-operative workup.

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Deshmukh, S. D., Sinai Khandeparkar, S. G., Gulati, H. K., & Naik, C. S. (2014). Microfollicular adenoma of ectopic thyroid gland masquerading as salivary gland tumor - A diagnostic and therapeutic challenge: A case report. Journal of Medical Case Reports, 8(1). https://doi.org/10.1186/1752-1947-8-270

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