Hyperparathyroidism with coexisting hyperthyroidism.

Diagnosis of parathyroid disease in patients with hyperthyroidism may be difficult on clinical findings alone. Radiologic examination of the bones suggested the possibility of parathyroid disease in this patient. Confirmation of the diagnosis was made when serum calcium levels remained elevated in spite of adequate antithyroid medication. Measurement of serum parathyroid hormone levels may prove to be of greatest value. Of additional interest is the fact that the patient, before her symptoms became apparent, delivered an infant with congenital hypoparathyroidism.