title: Follicular carcinoma in a thyroglossal duct.
abstract: The case of a 24-year-old woman with follicular carcinoma arising de novo in a thyroglossal duct is reported. A review of the literature disclosed seven case reports of thyroglossal duct carcinoma with a mixed papillary-follicular pattern. There are three criteria for the diagnosis of follicular carcinoma of a thyroglossal duct: presence of a thyroglossal duct, absence of carcinoma within the thyroid gland and angioinvasion. A plan of treatment, based on the literature survey, should include Sistrunk excision of the tumour if possible, and subtotal thyroidectomy should be performed to eliminate the presence of a primary thyroid carcinoma.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D000328:Adult; D005260:Female; D006801:Humans; D013955:Thyroglossal Cyst / Q000473:pathology* / Q000601:surgery; D013961:Thyroid Gland / Q000196:embryology