[Medullary cancer arised in cervical accessory thyroid. Case report]

The Authors present a recent case of a medullary thyroid cancer arised in an ectopic accessory gland, whose definitive diagnosis was only set after the pathologist observation of the resected specimen. The Authors then review the causes of the anomaly and the literature classification of thyroid ectopies together with the commonest clinical, laboratory and imaging diagnostic features. In conclusion Authors indicate the importance of thinking about the possible ectopic thyroidal nature of an undiagnosed cervical mass, in order to recognize an unusual disease thus avoiding a delayed therapy.