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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...
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...
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...
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 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...

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Related Experiment Video

Updated: Jun 12, 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.

Adel H Alsuhaibani1, Jeffrey A Nerad

  • 1Oculoplastic, Orbital and Oncology Service, Department of Ophthalmology and Visual Sciences, University of Iowa Hospital and Clinics, Iowa City, Iowa.

Seminars in Plastic Surgery
|June 23, 2010
PubMed
Summary
This summary is machine-generated.

Early thyroid-associated orbitopathy (TAO) requires careful diagnosis to avoid misdiagnosis. Treatment for TAO ranges from observation to surgery, depending on disease severity and specific complications.

Keywords:
Graves' ophthalmopathyThyroid-associated orbitopathylid retractionproptosis

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Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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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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Published on: May 12, 2023

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Area of Science:

  • Ophthalmology
  • Endocrinology

Background:

  • Thyroid-associated orbitopathy (TAO) is an autoimmune condition affecting the eyes.
  • Early TAO symptoms like irritation and lid puffiness can be subtle and easily missed.
  • Accurate diagnosis of early TAO necessitates thorough clinical assessment, lab work, and imaging.

Purpose of the Study:

  • To highlight the importance of early diagnosis in thyroid-associated orbitopathy.
  • To outline current treatment strategies for TAO based on disease activity and severity.
  • To emphasize the role of understanding TAO pathogenesis in developing targeted therapies.

Main Methods:

  • Clinical evaluation for early signs of TAO.
  • Laboratory investigations to support diagnosis.
  • Orbital imaging studies for detailed assessment.
  • Review of current treatment modalities for mild, moderate, and severe TAO.

Main Results:

  • Early TAO presentations are often overlooked, leading to potential misdiagnosis.
  • Observation is suitable for mild to moderate active TAO.
  • Severe TAO, optic neuropathy, or keratopathy warrant immunosuppressants, radiotherapy, or decompression.
  • Surgery is reserved for inactive (cicatricial) TAO for stable outcomes.

Conclusions:

  • Early and accurate diagnosis of TAO is crucial for effective management.
  • Treatment decisions for TAO should be tailored to disease severity and specific complications.
  • Understanding TAO pathogenesis is key to advancing treatment options.