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Related Concept Videos

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...
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...
Goiter01:27

Goiter

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...
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...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

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Articles linked to this work by shared authors, journal, and citation graph.

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Euthyroidism and Long-Term Remission of Graves' Hyperthyroidism Following Treatment With an FcRn Blocker: A Case Report.

Thyroid : official journal of the American Thyroid Association·2026
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Molecular testing for the management of indeterminate thyroid nodules.

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Secukinumab in Moderate-to-Severe Graves Orbitopathy: A Randomized, Double-Blind, Placebo-Controlled, Multicenter Study.

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Uniting continental thyroid societies to address challenges in thyroid health in Africa: a call to action.

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Related Experiment Video

Updated: May 19, 2026

Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions
05:41

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

Published on: February 9, 2024

Imaging of thyrotoxicosis.

Jennifer A Sipos1, George J Kahaly

  • 1Division of Endocrinology, The Ohio State University, Columbus, USA. Jennifer.Sipos@osumc.edu

The American Journal of Medicine
|September 4, 2012
PubMed
Summary

Ultrasonography (US) is crucial for diagnosing and managing hyperthyroidism, offering advantages over traditional radioisotope scanning. This imaging technique aids in determining the cause of hyperthyroidism and predicting disease outcomes.

Area of Science:

  • Endocrinology
  • Radiology
  • Medical Diagnostics

Background:

  • Graves' disease diagnosis often relies on autoantibody tests and radioisotope scanning.
  • Ultrasonography (US) presents a valuable, underutilized tool in hyperthyroidism evaluation.

Discussion:

  • This review highlights the advantages of US over nuclear medicine imaging for determining hyperthyroidism etiology.
  • Ultrasonography's role in predicting Graves' disease remission and relapse is examined.
  • The utility of US in managing hyperthyroidism during pregnancy is detailed.

Key Insights:

  • Ultrasonography should be considered in the initial evaluation of all thyrotoxicosis patients.
  • US offers superior etiological differentiation compared to radioisotope scans.

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  • Sonography can predict pregnancy-related hyperthyroidism outcomes and fetal thyroid dysfunction without invasive procedures.
  • Outlook:

    • Further integration of ultrasonography into standard hyperthyroidism diagnostic protocols is recommended.
    • Research exploring advanced US techniques for predicting treatment response in Graves' disease is warranted.
    • US may reduce the need for invasive fetal monitoring in pregnancies complicated by maternal Graves' disease.