[Carcinoma of the parathyroid glands. Apropos of a case associated with thyroid struma].

The paper reports a case of carcinoma of the parathyroid associated with thyroid struma and underlines the difficulties of intraoperative diagnosis and the surgical approach which should be adopted on the basis of this finding. Often the diagnosis of the malignant nature of the neoplasia is based on the possible appearance of local or distant recurrence rather than histological examination.