Papillary adenocarcinoma of a thyroglossal duct cyst

Carcinoma in thyroglossal duct tissue is a rare occurrence. A case of papillary adenocarcinoma in a thyroglossal duct cyst is presented. Local excision by the Sistrunk technic appears adequate for the noninfiltrating, nonmetastatic lesion. Thyroid hormone should be given as a suppressive agent. Continuous follow-up is necessary for the rest of the patient's life.