[Primary hyperparathyroidism in childhood: apropos of a new case]

A case of primary hyperparathyroidism in a twelve-year-old boy is reported. Primary hyperparathyroidism should be considered in patients with hypercalcemia and hypophosphataemia. Involvement of others organs must be discarded with appropriate complementary test and then, an exploratory surgery must be undertaken by an experienced surgeon to proceed, if it is needed, to parathyroidectomy.