A childhood primary hyperparathyroidism due to parathyroid adenoma: Atypical presenting with leg pain and normocalcemia

Abstract

Primary hyperparathyroidism (PHPT) is a rare disorder in childhood and adolescence. Parathyroid adenoma is the most common cause of PHPT. Laboratory findings mainly include hypercalcemia, hypophosphatemia, hypercalciuria and elevated parathormone levels, but if 25 hydroxyvitamin D levels are below 20 ng/mL, normal serum calcium can be observed. In this report, we presented a boy diagnosed with parathyroid adenoma, uncommon in childhood, with only leg pain symptoms other than hypercalcemia and hypercalciuria.