[Papillary carcinoma developing in thyroglossal duct cyst. Apropos of 2 cases]

The authors report two cases of papillary carcinoma of a thyreoglossal duct cyst. In both cases, the thyroïd gland was normal. Clinical manifestations are not specific and the diagnosis is usually made by histopathologic examination which reveals in the majority of cases a papillary carcinoma. When loco-regional or metastatic extension are absent surgical excision of the cyst is sufficient.