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The Parathyroid Glands

The Parathyroid Glands

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 producing...

Hyperthyroidism I: Introduction

Hyperthyroidism I: Introduction

Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...

Hormones and Bone Tissue

Hormones and Bone Tissue

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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Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...

Hyperthyroidism II: Pathophysiology

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...

Hypothyroidism II: Pathophysiology

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Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...

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Related Experiment Video

Updated: Jun 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

[Intraoperative parathyroid hormone determination for primary hyperparathyroidism].

K Lorenz¹, H Dralle

¹Klinik für Allgemein-, Viszeral- und Gefässchirurgie, Universitätsklinikum Halle, Universität Halle-Wittenberg, Halle/Saale. kerstin.lorenz@medizin.uni-halle.de

Der Chirurg; Zeitschrift Fur Alle Gebiete Der Operativen Medizen

|June 16, 2010

Summary

Intraoperative parathyroid hormone measurement (IOPTH) is crucial for successful parathyroidectomy in primary hyperparathyroidism. Optimizing IOPTH criteria ensures accurate diagnosis and improves patient outcomes.

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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

Related Experiment Videos

Last Updated: Jun 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

Area of Science:

Endocrinology
Surgical Oncology
Biochemistry

Context:

Primary hyperparathyroidism (PHPT) management relies on accurate surgical intervention.
Focused and minimally invasive parathyroidectomy are preferred PHPT treatments.
Intraoperative parathyroid hormone measurement (IOPTH) aids in assessing surgical success during operations.

Purpose:

To provide an updated review of intraoperative parathyroid hormone measurement (IOPTH) in primary hyperparathyroidism.
To clarify the importance of selecting appropriate IOPTH cut-off values for predicting operative success (biochemical healing).
To offer practical guidelines for the clinical application of IOPTH.

Summary:

Intraoperative parathyroid hormone measurement (IOPTH) is vital for focused parathyroidectomy in primary hyperparathyroidism, helping exclude multiglandular disease.
The selection of IOPTH success criteria is critical for prognosis, but current criteria are confusing and assessments contradictory.
The cost-benefit of routine IOPTH use, even in open surgery, remains debated.

Impact:

Standardizing IOPTH criteria can improve the accuracy and success rates of parathyroidectomy.
Clear guidelines for IOPTH use can enhance clinical decision-making and patient care.
Optimizing IOPTH protocols may lead to more efficient and cost-effective treatment of primary hyperparathyroidism.