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  • Title: Hyperparathyroidism in multiple endocrine neoplasia syndrome.
    Author: Kraimps JL, Duh QY, Demeure M, Clark OH.
    Journal: Surgery; 1992 Dec; 112(6):1080-6; discussion 1086-8. PubMed ID: 1360712.
    Abstract:
    BACKGROUND: We analyzed clinical findings and results of parathyroidectomy in 42 patients treated from 1936 to 1988 at the University of California, San Francisco (UCSF) for primary hyperparathyroidism and multiple endocrine neoplasia (MEN) syndrome to document results of parathyroidectomy and reasons for failed parathyroid operations. METHODS: Of the 42 patients (38 had MEN 1 syndrome; 4 had MEN 2A syndrome), 40 patients were treated surgically: 29 had initial parathyroidectomy at UCSF; 11 were referred to UCSF because of MEN syndrome. Eight of these 11 patients required reoperation for persistent or recurrent hyperparathyroidism. Patients with hyperplasia were treated with subtotal parathyroidectomy; the glands of those patients with solitary or double adenomas were removed with or without biopsy of the normal appearing glands. RESULTS: Overall, in seven (50%) of 14 patients with hyperplasia, three (16%) of 19 patients with solitary adenoma, and one (14%) of seven patients with double adenomas, recurrent or persistent hyperparathyroidism developed. Failure in patients with hyperplasia was due to missed supernumerary glands (13%) and missed ectopic glands (33%). Failure occurred in patients with solitary (three patients) or double (one patient) parathyroid tumors because of unrecognized hyperplasia. None of the four patient with MEN 2A syndrome had persistent or recurrent disease, but hypoparathyroidism developed in one patient; hypoparathyroidism developed in three patients with MEN 1 syndrome. CONCLUSIONS: These data suggest that although many patients with primary hyperparathyroidism and MEN syndrome have multiple abnormal parathyroid glands, two populations of patients exist; one population has solitary or double adenomas and recurrence is uncommon, whereas the other population of patients has hyperplasia and persistent or recurrent disease is common.
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