[Endothyroid (non-chromaffin) branchiomeric paraganglioma. Description of a clinical case]

A case of endothyroid paraganglioma in a 9-yr-old girl is described. Subtotal lobectomy was performed and the tumour was not recognised until a histological examination has been carried out on a section embedded in paraffin. Only two other cases could be found in the literature. An account is given of the diagnosis of this form, and reference is made to its prognostic aspects since there is a remote possibility that metastasis may occur many years after surgery.