The thyroglossal duct is an embryological anatomical structure forming an open connection between the initial area of development of the thyroid gland and its final position.

The Thyroglossal Duct
CT of thyroglossal duct cysts
Thyroglossal duct and ectopic thyroid disorders
Atypical thyroglossal duct cyst: a rare cause for a solitary cold thyroid nodule in childhood.
Diagnosis and treatment of thyroid, parathyroid, and thyroglossal duct cysts
Diagnosis of papillary carcinoma in a thyroglossal duct cyst by fine-needle aspiration biopsy.
Carcinoma arising in median ectopic thyroid (including thyroglossal duct tissue)
Papillary carcinoma in fine needle aspiration smears of a thyroglossal duct lesion.
Primary papillary carcinoma of a thyroglossal duct cyst: a report of a case and literature review. Br J Surg 78: 87 - 89
Management of well-differentiated thyroid carcinoma presenting within a thyroglossal duct cyst