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The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
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Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
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Related Experiment Video

Updated: Mar 31, 2026

Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
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Primary Hyperparathyroidism in MEN2 Syndromes.

Maria Alevizaki1, Katerina Saltiki2

  • 1Endocrine Unit, Department Medical Therapeutics, Alexandra Hospital, Athens University School of Medicine, 80, Vassilissis Sofias Ave, Athens, 11528, Greece. mani@otenet.gr.

Recent Results in Cancer Research. Fortschritte Der Krebsforschung. Progres Dans Les Recherches Sur Le Cancer
|October 24, 2015
PubMed
Summary
This summary is machine-generated.

Primary hyperparathyroidism (PHP) affects 20-30% of MEN2A patients, often linked to specific RET gene mutations. Screening for PHP is recommended in MEN2 patients, especially those with known mutations.

Keywords:
HypercalcemiaHyperparathyroidismHypoparathryroidismMEN1 syndromeMEN2 syndromeMinimally invasive surgeryParathyroid hormoneSestamibi scan

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Area of Science:

  • Endocrinology
  • Genetics
  • Oncology

Background:

  • Primary hyperparathyroidism (PHP) is a recognized component of Multiple Endocrine Neoplasia type 2 (MEN2) syndromes.
  • PHP occurs in 20-30% of MEN2A patients, but is less common in carriers with only familial medullary thyroid carcinoma.
  • A genotype-phenotype correlation exists, with PHP more frequently associated with the RET gene exon 11, codon 634 mutation.

Purpose of the Study:

  • To summarize the prevalence and characteristics of primary hyperparathyroidism in MEN2 syndromes.
  • To highlight the importance of screening for PHP in MEN2 patients.
  • To discuss the management and diagnostic considerations for PHP in the context of MEN2.

Main Methods:

  • Review of clinical data and genetic associations of PHP in MEN2 patients.
  • Analysis of phenotype/genotype correlations, particularly with RET gene mutations.
  • Discussion of diagnostic criteria and treatment approaches for PHP in MEN2.

Main Results:

  • Clinical manifestations of PHP in MEN2 are typically mild, with diagnosis peaking after the third decade.
  • Multiglandular disease, hyperplasia, and adenoma can occur in the parathyroids.
  • PHP is more frequently diagnosed in association with the RET gene exon 11, codon 634 mutation.

Conclusions:

  • Patients with MEN2 syndromes require screening for PHP using serum calcium measurements.
  • Screening intensity should be increased for individuals carrying RET mutations strongly associated with PHP.
  • Surgical excision is the standard treatment for PHP in MEN2 patients.