[Severe neonatal primary hyperparathyroidism: presentation of a case and review of the literature]. / Hiperparatiroidismo primario neonatal severo: presentación de un caso y revisión de la literatura.

We present a newborn baby with a diagnosis of neonatal severe primary hyperparathyroidism, based on the concomitant presence of hypercalcemia, hypophosphatemia and elevated values of parathormone. A national and international review on the subject is made and the differential diagnosis of this rare entity is discussed.