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Related Concept Videos

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...
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...
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...
The Thyroid Gland01:23

The Thyroid Gland

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...
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...
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...

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Related Experiment Video

Updated: May 21, 2026

Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy
05:12

Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy

Published on: May 12, 2023

[Thyroid associated orbitopathy].

Marta Alves1, Celestino Neves, Davide Carvalho

  • 1Serviço de Endocrinologia, Hospital de S. João, Porto, Portugal.

Acta Medica Portuguesa
|June 21, 2012
PubMed
Summary
This summary is machine-generated.

Thyroid associated orbitopathy, often linked to Graves' disease, requires careful diagnosis and management. Early intervention and coordinated care by ophthalmologists and endocrinologists are crucial for optimal outcomes.

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Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy
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Area of Science:

  • Ophthalmology
  • Endocrinology
  • Immunology

Context:

  • Thyroid associated orbitopathy (TAO) is a complex autoimmune condition often associated with Graves' disease hyperthyroidism.
  • Pathogenic mechanisms of TAO remain incompletely understood, necessitating clear diagnostic and therapeutic strategies.
  • TAO presents in approximately 90% of cases alongside hyperthyroidism, requiring differential diagnosis for atypical presentations.

Purpose:

  • To outline the diagnostic approach for thyroid associated orbitopathy.
  • To detail current treatment strategies based on disease activity and severity.
  • To emphasize the importance of multidisciplinary care in managing TAO.

Summary:

  • TAO diagnosis involves recognizing characteristic signs and excluding other conditions.
  • Management hinges on assessing disease activity and severity, with euthyroid state restoration being key.
  • Intravenous glucocorticoids are first-line for active TAO, followed by surgery for inactive disease; other agents are considered for refractory cases.

Impact:

  • Optimized treatment protocols for thyroid associated orbitopathy can mitigate disease progression.
  • Multidisciplinary collaboration between ophthalmologists and endocrinologists improves patient outcomes.
  • Timely and appropriate intervention in specialized centers is vital for managing TAO effectively.