Papillary carcinoma of thyroglossal duct cyst. A case report.

A case of papillary carcinoma of thyroglossal duct cyst in a 68 year old woman is here described. Histology showed a papillary carcinoma of thyroid type inside the cyst. The wall of this latter contained normal thyroid follicles. Psammoma bodies and ground glass nuclei were also observed. The origin, pathology and relationship of this neoplasia with a thyroid primary are discussed.