Abstract
Background
The optimal surgical approach for patients with primary hyperparathyroidism (pHPT) and multiple endocrine neoplasia 1 (MEN1) is controversial. We sought to determine the optimal type of surgery for pHPT in MEN1.
Methods
We collected data on clinical presentation, surgery, and follow-up for MEN1 patients with pHPT at the University Medical Center Utrecht and affiliated hospitals between 1967 and 2008. Furthermore, we performed a systematic review of the literature and meta-analysis. Surgical procedures were classified into less than subtotal (<SPTX) versus subtotal (SPTX) and total parathyroidectomy (TPTX).
Results
Fifty-two patients underwent primary surgery for pHPT, of which 29 had <SPTX, 17 SPTX, and 6 TPTX. Recurrent pHPT was most frequent after SPTX (65%) followed by <SPTX (59%). Persistent disease was most frequent after <SPTX (31%). Time to recurrence was 61 months longer after SPTX than after <SPTX. Although recurrent pHPT was not seen after TPTX, permanent hypoparathyroidism developed in 67% of these patients. The meta-analysis showed that after SPTX and TPTX, patients had the lowest risk of persistent and recurrent pHPT. TPTX had the highest risk of permanent hypoparathyroidism. Large noncomparative studies showed a low recurrence rate after SPTX and TPTX.
Conclusion
We believe that SPTX is the best surgical therapy for pHPT in MEN1. MEN1 patients with pHPT should not be treated with <SPTX because of the unacceptable high rate of recurrent and persistent pHPT. Additionally, a thymectomy should routinely be performed in these patients.
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Acknowledgments
We thank Prof. Lips for reading the manuscript. This work was supported by the Michael van Vloten Fund of the Dutch Surgical Society and the Dutch Cancer Society.
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G. D. Valk and I. H. M. Borel Rinkes contributed equally to this work.
Appendices
Appendix A: Predefined search terms
MEN1
“MEN 1” OR “MEN1” OR “MENI” OR “MEN I” OR “multiple endocrine neoplasia type 1” OR “multiple endocrine neoplasia syndrome type 1”.
Primary hyperparathyroidism
“Hyperparathyroidism, Primary”[Mesh] OR “Parathyroid Neoplasms”[Mesh] OR “primary hyperparathyroidism” OR “hyperparathyroidism” OR “HPT” OR “parathyroid adenoma*” OR “parathyroid hyperplasia”.
Surgical procedure
“Parathyroidectomy”[Mesh] OR “parathyroid surgery” OR “parathyroidectomy” OR “total parathyroidectomy” OR “subtotal parathyroidectomy” OR “conventional neck exploration” OR “unilateral neck exploration” OR “minimally invasive adenomectomy”.
Appendix B: Summary of the outcomes of primary surgical treatment of pHPT in MEN1 patients in the literature
See Table 4.
Appendix C1: Comparison of <SPTX versus SPTX/TPTX on persistent pHPT
<SPTX fewer than 3 parathyroid glands resected, SPTX 3–3½ parathyroid glands resected, TPTX total parathyroidectomy with autotransplantation, SPTX and TPTX are analyzed together
After <SPTX, patients are more likely to develop persistent pHPT than after SPTX/TPTX (OR = 4.97, 95% CI = 2.11–11.71, P = 0.0002)
Appendix C2: Comparison of SPTX versus TPTX for persistent pHPT
SPTX 3–3½ parathyroid glands resected, TPTX total parathyroidectomy with autotransplantation
After SPTX, patients do not have a significantly higher risk of developing persistent pHPT than after TPTX (OR = 2.37, 95% CI = 0.54–10.44, P = 0.25)
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Schreinemakers, J.M.J., Pieterman, C.R.C., Scholten, A. et al. The Optimal Surgical Treatment for Primary Hyperparathyroidism in MEN1 Patients: A Systematic Review. World J Surg 35, 1993–2005 (2011). https://doi.org/10.1007/s00268-011-1068-9
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DOI: https://doi.org/10.1007/s00268-011-1068-9