Recurrent Hyperparathyroidism

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Abstract
Recurrent hyperparathyroidism occurred in 11 of 295 patients from 10 months to 34 years after an initially successful operation. Seven patients with recurrent hyperparathyroidism had either multiple endocrine adenomatosis type I (MEA) or familial hyperparathyroidism (FHP), one patient had parathyroid cancer, and two patients had renal failure at the time of recurrence. Four of these patients had their initial operations elsewhere. Recurrence developed in 33% of patients with MEA or FHP but in only 0.4% of 242 patients without MEA or FHP. The presence of MEA or FHP was known before parathyroid exploration in 18 (86%) of the 21 patients. In patients with MEA or FHP, subtotal parathyroidectomy should be performed if there is more than one gland involved. Other patients should be treated by selective removal of an adenoma because recurrence is rare. Subtotal parathyroidectomy should be reserved for patients with diffuse hyperplasia.