Int J Thyroidol.  2020 Nov;13(2):181-186. 10.11106/ijt.2020.13.2.181.

A Case of Ectopic Thyroid Papillary Carcinoma with Incidental Papillary Thyroid Microcarcinoma

  • 1Department of Otolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea


Ectopic thyroid is known to be a very rare disease. Its prevalence is 1 in 100,000-300,000, and it is the most common form of thyroid dysgenesis. In addition, it is known that primary thyroid cancer arising from ectopic thyroid tissue is rare. A 41-year-old male patient with mass in the anterior of the neck was admitted to our department of Otolaryngology. A surgical excision of the neck mass was carried out and the histopathology revealed papillary thyroid carcinoma. Total thyroidectomy and bilateral central neck dissection were then performed after 3 months from previous operation. As a result of histopathologic examination after surgery, we incidentally identified papillary microcarcinoma in the right thyroid lobe. We report a case of ectopic thyroid papillary carcinoma with incidental papillary thyroid microcarcinoma with a literature review.


Ectopic thyroid; Ectopic thyroid carcinoma; Papillary thyroid carcinoma; Papillary thyroid microcarcinoma
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