CARCINOMA PAPILÍFERO PRIMÁRIO DE DUCTO DO CISTO TIREOGLOSSO - RELATO DE CASO.

Thyroglossal duct cyst is a common congenital anomaly, due to failure of embryological development. Whenever diagnosed, surgical excision of the cyst is indicated due to the risk of infection and malignancy, with papillary thyroid carcinoma being the most common. This paper reports the case of a young patient who presented mass in the anterior cervical region, whose anatomopathological confirmed the diagnosis of thyroglossal duct cyst carcinoma with ectopic thyroid tissue, without evidence of carcinoma in the thyroid gland. Work carried out by reviewing the medical chart, and then analysis and discussion based on current literature. This article aimed to reinforce the importance of conducting an anatomopathological study of the thyroglossal duct cysts and the differentiation of metastatic carcinomas and primary carcinomas. [ABSTRACT FROM AUTHOR]