[Case of thyroglossal duct cyst].

Thyroglossal duct cyst has been reported to be derived from epithelial rests in the remnants of the thyroglossal duct produced by the descendant of the thyroid anlage. A 34-year-old man consulted our clinic with complaints of painless swelling located in the median cervical region. This tumor was excised under general anesthesia, according to the Sistrunk method. Histopathological findings showed that the inner side of the cyst wall was covered with the stratified squamous epithelium and cliniated columnar epithelium, and the outer layer, thickened connective tissue. No complications or recurrence occurred 2 years and half after the operation.