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Related Concept Videos

The Thyroid Gland01:23

The Thyroid Gland

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
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Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

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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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Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

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Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
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Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

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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...
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Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

7
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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Goiter01:27

Goiter

3
Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...
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Related Experiment Video

Updated: Apr 19, 2026

Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma

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[Thyroid surgery applicable in developing countries].

G Pauleau1, G Goin1, C Cazeres1

  • 1Service de chirurgie viscérale, hôpital d'instruction des armées Laveran, 34 boulevard Laveran, BP 60149, 13384 Marseille cedex 13.

Medecine Et Sante Tropicales
|December 16, 2014
PubMed
Summary
This summary is machine-generated.

Thyroid surgery in developing nations requires careful consideration of resource availability. Prioritize less invasive procedures like hemithyroidectomy or subtotal thyroidectomy when long-term thyroxine therapy is uncertain.

Keywords:
developing countriesendemic goiteriodine deficiencythyroidectomy

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Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Public Health

Context:

  • Thyroid surgery in developing countries presents unique challenges due to limited resources.
  • General surgeons often perform these procedures with restricted access to advanced diagnostics and treatments.

Purpose:

  • To review the indications for thyroid surgery in resource-limited settings.
  • To outline appropriate surgical techniques based on prevalent thyroid diseases and resource availability.

Summary:

  • Endemic goiter (grades 1 and 2) typically responds to iodine therapy; surgery is reserved for complications like mechanical obstruction, neoplastic changes, or hyperthyroidism.
  • Surgical approach selection must consider disease specifics and the reliability of long-term thyroxine hormone replacement therapy.
  • Total thyroidectomy should be avoided if thyroxine supplies are inconsistent; hemithyroidectomy and subtotal thyroidectomy are preferred.

Impact:

  • Guides surgical decision-making in resource-constrained environments to optimize patient outcomes.
  • Highlights the importance of considering long-term medication availability when planning thyroidectomies.
  • Promotes safer surgical practices for thyroid conditions in developing countries.