[Papillary carcinoma developed in the wall of a thyroglossal duct cyst]. / Carcinome papillaire développé dans la paroi d'un kyste du tractus thyréoglosse.

A case of papillary carcinoma arising in the wall of a thyroglossal duct cyst is described. This is a rare occurrence (1% of cases). Controversies exist concerning its nature (cancer of the thyroid or primary cancer of the thyroglossal cyst) and its treatment (Sistrunk's operation alone or combined with thyroidectomy).