Congenital thyroid cyst of ultimobranchial gland origin.
The ultimobranchial gland (UBG) is an endocrine gland which contributes C cells to the thyroid gland in mammals. Dysembryonic tissues derived from the UBG have been described as cystic bodies. The following case illustrates the criteria which characterize dysembryogenesis of the UBG.
D000818:Animals; D003560:Cysts / Q000151:congenital* / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000601:surgery*; D013959:Thyroid Diseases / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D014460:Ultimobranchial Body