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Related Concept Videos

The Parathyroid Glands00:59

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: Introduction01:25

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...
Hyperthyroidism II: Pathophysiology01:27

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: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

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...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor, and heat...
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...

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Related Experiment Video

Updated: May 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

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

Published on: August 17, 2022

Study of primary hyperparathyroidism.

Parmar Girish1, M Lala, M Chadha

  • 1P.D. Hinduja National Hospital and Medical Research Centre, Veer Savarkar Marg, Mahim, Mumbai - 400 016, India.

Indian Journal of Endocrinology and Metabolism
|April 9, 2013
PubMed
Summary
This summary is machine-generated.

Primary hyperparathyroidism (PHPT) predominantly presents with symptoms like bone pain and kidney stones, even in developed nations. Asymptomatic cases are also identified through routine calcium monitoring, with no link found to Vitamin D levels.

Keywords:
Primary hyperparathyroidismsestamibi scanultrasonography parathyroid

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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

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Last Updated: May 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

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
03:57

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

Area of Science:

  • Endocrinology
  • Nephrology
  • Skeletal Diseases

Background:

  • Primary hyperparathyroidism (PHPT) exhibits a changing clinical spectrum, with asymptomatic cases more prevalent in developed countries and symptomatic cases in developing nations.
  • This study investigates the clinical presentation, diagnostic methods, and treatment outcomes of PHPT patients at a single center.

Purpose of the Study:

  • To analyze the clinical spectrum, diagnostic workup, and surgical outcomes of patients diagnosed with primary hyperparathyroidism.
  • To understand the prevalence of symptomatic versus asymptomatic PHPT and associated clinical manifestations.

Main Methods:

  • A retrospective review of medical records for 96 patients with PHPT between 2000 and July 2012.
  • Data collected included patient demographics, clinical symptoms, biochemical parameters (serum calcium, parathyroid hormone, 25(OH) Vitamin D), imaging results (Sestamibi scan, ultrasonography), and surgical findings.

Main Results:

  • The majority of patients (82.3%) were symptomatic, with bone pain (52%) and renal stones (27%) being the most common complaints.
  • All patients presented with hypercalcemia and elevated parathyroid hormone (PTH) levels. Sestamibi scan and ultrasonography showed high accuracy in localizing parathyroid adenomas.
  • No correlation was observed between 25(OH) Vitamin D levels and clinical symptomatology. Postoperative complications occurred in 20.8% of patients.

Conclusions:

  • Despite advances, bone and kidney-related issues remain the primary manifestations of PHPT, even in affluent societies.
  • The existence of asymptomatic PHPT, detectable via routine serum calcium screening, is confirmed.
  • Vitamin D levels did not correlate with the clinical presentation of PHPT in this patient cohort.