Primary Hyperparathyroidism in Multiple Endocrine Neoplasia Type IIa: Retrospective French Multicentric Study

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Abstract
n = 2), 1 (n = 24), 2 (n = 5), > 2 (n = 12), 4 (n = 11). Pathology (initial surgery) consisted of 24 adenomas, 4 double adenomas, and 25 hyperplasia. Cure after initial surgery was obtained in 89%, including a 22% incidence of hypoparathyroidism. There were 6 cases (11%) with persistent PHPT. With a mean follow-up of 6.4 years, five patients (9%) had recurrent PHPT. The results indicate that MEN-IIa-related PHPT is generally associated with mild, often asymptomatic hypercalcemia. Despite recurrences encountered 5 to 15 years after the first cervicotomy, resection of only macroscopically enlarged glands generally appears sufficient. Subtotal or total parathyroidectomy with autotransplantation is associated with a high rate of hypoparathyroidism.

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