Primary hyperparathyroidism and pregnancy.

The incidence of pregnancy with primary hyperparathyroidism (PHPT) is probably underestimated, possibly because of the lack of routine prenatal serum calcium screening and possibly because the combination of pregnancy and mild asymptomatic PHPT is less than disastrous. This is the first reported case in which serum calcium and parathyroid hormone levels were measured periodically during a successful gestation in an asymptomatic and untreated patient with provisional primary hyperparathyroidism.