Hyperparathyroidism in pregnancy.

Two cases of primary hyperparathyroidism in pregnancy are described. One was treated by parathyroidectomy in the late third trimester with good outcome. It appears that parathyroidectomy, although traditionally performed in the second trimester, may in selected cases be a reasonable treatment option in late pregnancy. The other patient was treated successfully with large doses of oral phosphosoda. Hypokalemia in association with this form of therapy, and not related to diarrhea or other known etiologies, is described for the first time.