[A combination of ectopic parathyroid adenoma and thalassemia with manifestations of extreme hyperparathyroidism].

A case is presented of a woman with primary hyperparathyroidism due to a parathyroid adenoma with deep mediastinal localization successfully treated surgically. The disease was manifested at the beginning with joint pains only, followed by extreme bone, renal and metabolic disorders endangering the life of the patient. The unusually severe sceleton decalcification is linked with the functional exhaustion of the calcitonin C producing cells. The changes in these cells in the resected thyroid tissue were discrepant with the hypercalciemia. A special feature of the case is the combination of parathyroid adenoma with a number of dysmorphic signs, with a persistent thymus and beta-thalassemia (heterozygotic form) with familial predisposition--thalassemia of the mother and malformations of the patient's child. On this basis the authors presume a genetic determination of the basic disease similar to other forms of primary hyperparathyroidism.