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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...

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Related Experiment Video

Updated: Mar 19, 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

Exploring surgical failures in primary hyperparathyroidism.

Azza Mediouni¹, Maamoun Kriaa¹, Maha Mejbri¹

¹University of Tunis el Manar, Faculty of Medicine of Tunis, postal code 1007, La Rabta Hospital, ENT department, Tunis, Tunisia.

La Tunisie Medicale

|March 18, 2026

Summary

This summary is machine-generated.

Persistent primary hyperparathyroidism (PHPT) after surgery is often due to multi-gland disease or ectopic glands. Using intraoperative parathyroid hormone (iOPTH) measurement can significantly reduce failure rates in parathyroidectomy for PHPT.

Keywords:

Parathyroid Glands Parathyroid hormone Parathyroidectomy Primary hyperparathyroidism Treatment Failure

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Published on: March 14, 2017

Area of Science:

Endocrinology
Surgical Oncology
Medical Diagnostics

Background:

Parathyroidectomy is the primary treatment for primary hyperparathyroidism (PHPT).
A significant percentage of patients (5-10%) experience treatment failure after initial parathyroidectomy.
Identifying causes of persistent PHPT is crucial for improving surgical outcomes.

Purpose of the Study:

To investigate the causes of treatment failure in patients undergoing parathyroidectomy for PHPT.
To identify factors associated with persistent PHPT (perPHPT) after surgery.

Main Methods:

Retrospective case series of patients who underwent parathyroidectomy for PHPT (2004-2020).
Cure defined as normal calcium homeostasis for ≥6 months post-surgery.
Persistent PHPT defined as hypercalcemia within 6 months post-surgery.

Main Results:

The failure-to-cure rate was 6% (10 out of 165 patients).
Multi-gland disease (MGD) was identified in 70% of persistent cases; ectopic adenoma in one.
Intraoperative parathyroid hormone (iOPTH) measurement showed 88.5% sensitivity; its absence contributed to failure in 2 cases.

Conclusions:

Multi-gland disease is a primary cause of persistent PHPT.
Ectopic glands and surgical technicalities can also lead to treatment failure.
Routine use of iOPTH is vital for reducing persistent PHPT incidence.