경부 림프절 전이를 동반한 갑상설관 낭종 유두암 1예

A thyroglossal duct cyst (TGDC) is the most common developmental anomaly of the thyroid gland. Malignant neoplasms arising from a thyroglossal duct cyst are rare (only 1% of thyroglossal duct cyst cases). In most cases, diagnosis of the thyroglossal duct cyst carcinoma is incidentally established after excision of a clinically benign thyroglossal duct cyst. We report a case of papillary carcinoma arising in the thyroglossal duct cyst with both neck lymph nodes metastasis, which defined preoperatively through clinical, radiologic and cytologic evaluation. (J Clinical Otolaryngol 2012;23:308-312)