Your daughter's cyst sounds like a thyroglossal duct cyst. This is a defect which is present from birth but does not show itself until later in childhood, most commonly in preschools aged children ...

Carcinoma within the thyroglossal duct (TGDCa) is a very rare pediatric tumor. This report presents the case of a 15-year-old girl with TGDCa, reviews the previously published pediatric cases of ...