Papillary carcinoma of a thyroglossal duct remnant with Hashimoto's thyroiditis.

A rare case of papillary carcinoma of the thyroglossal duct remnant with Hashimoto's thyroiditis of the nonneoplastic ectopic thyroid tissue and the thyroid gland is described. The need for fine-needle aspiration cytologic examination in the management is stressed. The prognosis is excellent when the tumor is limited to the ectopic thyroid tissue and managed by a combination of the Sistrunk procedure and subtotal thyroidectomy followed by long-term thyroid suppression.