ABSTRACT

An infant diagnosed with NSHPT at 3 days of age is presented here. Since, the hypercalcemia did not respond to the classical treatment of hypercalcemia and pamidronate infusions, subtotal parathroidectomy was performed at three month of age. The serum calcium and parathyroid hormone (PTH) levels decreased to the normal levels immediately after the surgery. Butt, moderate hypercalcemia with upper limits of normal PTH levels were determined. at one year of age. Herein, we report our experience in treatment and follow-up of an infant with NSHPT.

Neonatal severe hiperparathroidism (NSHPT) due to homozygous inactivating mutations in the CaSR gene is a very rare disease. NSHPT manifests severe hypercalcemia, hyperparathyroidism and life-threatening bone disease, respiratory distress syndrome and failure to thrive shortly after birth. If total parathyroidectomy is not performed urgently during the neonatal period, it can be fatal or result in devastating neurodevelopmental complications in the survivors.