Maternal primary hyperparathyroidism: Discordant outcomes in a twin pregnancy

Abstract

The case reports a neonate (twin 2 of a twin girl pregnancy) presenting with seizures due to hypocalcaemia. The presumptive cause of the hypocalcaemia was maternal hyperparathyroidism with concurrent vitamin D deficiency. The first twin remained free of hypocalcaemia and was vitamin D replete, despite similar exposure in the pregnancy and similar postnatal care. © Paediatrics and Child Health Division (Royal Australasian College of Physicians).