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Related Concept Videos

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...
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 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...
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...
Hormones and Bone Tissue01:17

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.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
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 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...

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Related Experiment Video

Updated: May 11, 2026

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

Parathyroid failure following thyroid surgery.

A K Biswas1, S H Rahman, B H Siddiquee

  • 1Department of Otolaryngology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh.

Mymensingh Medical Journal : MMJ
|May 30, 2013
PubMed
Summary
This summary is machine-generated.

Post-thyroidectomy parathyroid failure, causing hypocalcemia, is more common in thyroid cancer patients and after neck dissection. Careful identification of parathyroid glands during surgery is crucial to prevent this complication.

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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

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Last Updated: May 11, 2026

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

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

Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Head and Neck Surgery

Background:

  • Post-thyroidectomy hypocalcemia is a significant complication.
  • Parathyroid failure can result from thyroid disease and surgical factors.

Purpose of the Study:

  • To investigate the association between post-thyroidectomy parathyroid failure and specific thyroid diseases.
  • To determine the impact of surgical techniques, including neck dissection, on parathyroid function after thyroidectomy.

Main Methods:

  • A cross-sectional study of 50 patients undergoing total or near-total thyroidectomy for malignancy or multinodular goiter.
  • Data collected on patient demographics, thyroid disease type, surgical procedures, and post-operative hypocalcemia incidence.
  • Statistical analysis to compare hypocalcemia rates based on disease type, neck dissection, and parathyroid gland identification.

Main Results:

  • Overall post-operative hypocalcemia occurred in 30% of patients (4% permanent).
  • Hypocalcemia was significantly higher in malignant thyroid disease (42.30%) vs. benign (16.66%).
  • Neck dissection (54.54%) and failure to identify parathyroid glands (62.5%) increased hypocalcemia risk.

Conclusions:

  • Thyroid malignancy and neck dissection are significant risk factors for post-thyroidectomy parathyroid failure.
  • Preservation and identification of parathyroid glands are critical for preventing hypocalcemia.
  • Clinical outcomes highlight the need for tailored surgical approaches based on thyroid pathology.