갑상설낭종에서 발생한 유두상암종 2예

Thyroglossal duct carcinoma is uncommon, occuring in approximately 1% of all thyroglossal duct cysts. It is often diagnosed incidentally after surgical excision. Ninety-four percent of carcinomas are of thyroid origin, with most being papillary in nature, and 6% are of squamous cell origin. The controversy continues about the most effective treatment for papillary carcinoma occuring in a thyroglossal duct cyst (TGDC). We have recently experienced two cases of papillary carcinoma after TGDC excision. One patient underwent only Sistrunk operation but the disease recurred at the left cervical lymph node after 6 years and the other patient underwent total thyroidectomy followed by radioactive iodine therapy after Sistrunk operation. (J Clinical Otolaryngol 2005;16:306-310)