1 From the Children's Hospital, Brigham and Women's Hospital, and Harvard Medical School, Boston, and Marshall University School of Medicine, Huntington, West Virginia
A neonate with severe primary hyperparthyroidism was successfully managed by parathyroidectomy and heterotopic autotransplantation (one third of one gland of the infant was implanted in the forearm). In vitro studies of parathyroid tissue from the infant revealed a severe defect in parathyroid suppressibility. Postoperatively, the infant had modest hypercalcemia, normal serum immunoreactive parathyroid hormone levels, hypermagnesemia, and relative hypocalciuria. The parents were related and both had asymptomatic hypercalcemia with mean serum immunoreactive parathyroid hormone levels that were within the normal range. Similar to the findings in the infant postoperatively, relative hypocalciuria in the presence of hypercalcemia was found in the mother; in contrast, the father had hypercalciuria. The presumed dominantly transmitted hypercalcemia in this kindred is consistent with familial hypocalciuric hypercalcemia with a confounding factor of ethanol possibly accounting for the hypercalciuria in the father.
Key Words: neonatal hyperparathyroidism familial hypercalcemia parathyroid autotransplantation
Submitted on August 12, 1985
Accepted on November 4, 1985
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