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Related Concept Videos

The Parathyroid Glands00:59

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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.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
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Hormones and Bone Tissue01:17

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
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Update on parathyroid carcinoma.

F Cetani1, E Pardi2, C Marcocci2

  • 1University Hospital of Pisa, Endocrine Unit 2, Via Paradisa, 2, 56124, Pisa, Italy. cetani@endoc.med.unipi.it.

Journal of Endocrinological Investigation
|March 23, 2016
PubMed
Summary
This summary is machine-generated.

Parathyroid carcinoma (PC), a rare endocrine disorder, is often linked to severe primary hyperparathyroidism (PHPT). Genetic testing of the CDC73 gene and parafibromin immunostaining aid diagnosis and prognosis.

Keywords:
CDC73HRPT2Hyperparathyroidism-jaw tumor syndromePRUNE2ParafibrominPrimary hyperparathyroidism

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Area of Science:

  • Endocrinology
  • Oncology
  • Genetics

Background:

  • Parathyroid carcinoma (PC) is a rare endocrine malignancy causing severe primary hyperparathyroidism (PHPT).
  • Clinical presentation is often dominated by hypercalcemia due to excessive parathyroid hormone (PTH) secretion.
  • Diagnosis can be challenging, relying on pathological confirmation of local invasion or metastasis.

Purpose of the Study:

  • Review current data on parathyroid carcinoma.
  • Focus on molecular pathogenesis, including the role of the CDC73 gene.
  • Evaluate the clinical utility of CDC73 genetic testing and parafibromin immunostaining.

Main Methods:

  • Literature review of parathyroid carcinoma data.
  • Analysis of CDC73 gene mutations and parafibromin expression.
  • Correlation of molecular findings with clinical outcomes.

Main Results:

  • Inactivating CDC73 mutations are found in up to 70% of sporadic PC cases, with 1/3 being germline.
  • Loss of parafibromin immunostaining is observed in most PC.
  • Combined CDC73 mutations and parafibromin loss predict a worse prognosis.

Conclusions:

  • En bloc resection is the primary treatment for PC.
  • PC often recurs locally or metastasizes, leading to mortality from hypercalcemia.
  • CDC73 genetic testing and parafibromin immunostaining are valuable diagnostic and prognostic tools.