Conclusions: The thyroglossal duct cyst must be studied in the adult population through fine-needle aspiration biopsy (FNAB) and a frozen section in cases in which FNAB is inconclusive or unavailable.
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 ...
When a thyroglossal duct cyst FNAB is diagnostic for carcinoma, a thyroid ultrasound must be performed in order to rule out the presence of thyroid disease. Likewise, if a non-diagnostic FNAB is ...