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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 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...
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...
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: Jun 4, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Silent thyroiditis.

P Walker

    Canadian Family Physician Medecin De Famille Canadien
    |February 1, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Silent thyroiditis, a cause of temporary hyperthyroidism, presents without pain and with low radioiodine uptake. This condition often affects postpartum women and typically resolves on its own.

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    Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions
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    Last Updated: Jun 4, 2026

    Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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    Published on: March 17, 2023

    Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
    10:19

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    Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions
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    Area of Science:

    • Endocrinology
    • Internal Medicine
    • Pathology

    Background:

    • Silent or painless thyroiditis is a common cause of transient hyperthyroidism.
    • It presents with a normal to slightly enlarged, firm thyroid gland, lacking pain or tenderness.
    • A key diagnostic feature is markedly reduced radioiodine uptake.

    Purpose of the Study:

    • To describe the clinical, histological, and epidemiological characteristics of silent thyroiditis.
    • To differentiate it from other causes of hyperthyroidism.
    • To discuss potential pathogenetic factors and clinical course.

    Main Methods:

    • Clinical observation and case review.
    • Histological examination of thyroid tissue.
    • Assessment of radioiodine uptake and thyroid function tests.

    Main Results:

    • Histology reveals significant lymphocytic infiltration, sometimes forming lymphoid follicles.
    • Other autoimmune markers are typically absent.
    • The condition shows a predilection for the postpartum period, with potential for relapses.

    Conclusions:

    • Silent thyroiditis is a benign, transient condition often managed with beta-blockers for symptom relief.
    • While pathogenetic factors are unknown, an autoimmune basis is considered, especially in postpartum cases.
    • Recurrences can occur with subsequent pregnancies.