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Changing biochemical presentation of primary hyperparathyroidism

  • Endocrine Surgery
  • Published:
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Abstract

Purpose

Patients with primary hyperparathyroidism, pHPT, present with milder symptoms than previously. Some, but not all studies, suggest that this change in clinical pattern also implies lower preoperative parathyroid hormone (PTH) and/or calcium levels and smaller adenomas. This is important since reports indicate that smaller adenomas are more difficult to detect on preoperative imaging, possibly increasing the risk of surgical failure.

Methods

There were 640 patients with histologically confirmed single-gland pHPT identified in a prospectively collected database. Median values of preoperative calcium, PTH, as well as adenoma weight were compared in three different time periods: 1990–1995, 1996–2000, and 2000–2007. Correlation between the preoperative levels of calcium and PTH and adenoma weight was calculated.

Results

Preoperative ionized calcium decreased significantly over time (p < 0.001). There was a positive correlation between preoperative PTH and adenoma weight (r = 0.32, p < 0.001). The magnitude of this correlation decreased over time. In women, adenoma weight decreased significantly over time (p = 0.03). Median (25th–75th percentile) adenoma weight in women was 750 (400–1,380) mg, 650 (350–1,205) mg, and 520 (305–1,065) mg in the first, second, and third period, respectively.

Conclusion

From 1990 to 2007, there was a significant trend to operate pHPT patients with lower preoperative serum ionized calcium levels. In women, the adenoma weight decreased. This trend could potentially lead to decreased sensitivity in preoperative localization procedures.

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Authors and Affiliations

  1. Department of Surgery, Lund University Hospital, 221 85, Lund, Sweden

    Martin Almquist, Anders Bergenfelz, Mark Thier & Erik Nordenström

  2. Department of Surgery, Helsingborg County Hospital, Helsingborg, Sweden

    Hans Mårtensson

Authors
  1. Martin Almquist
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  2. Anders Bergenfelz
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  3. Hans Mårtensson
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  4. Mark Thier
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  5. Erik Nordenström
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Correspondence to Martin Almquist.

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ESES Vienna Presentation.

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Almquist, M., Bergenfelz, A., Mårtensson, H. et al. Changing biochemical presentation of primary hyperparathyroidism. Langenbecks Arch Surg 395, 925–928 (2010). https://doi.org/10.1007/s00423-010-0675-5

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  • DOI: https://doi.org/10.1007/s00423-010-0675-5

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