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Related Concept Videos

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

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Related Experiment Video

Updated: Jun 18, 2026

Spontaneous Murine Model of Anaplastic Thyroid Cancer
05:39

Spontaneous Murine Model of Anaplastic Thyroid Cancer

Published on: February 3, 2023

[Thyroid cancers].

G Andry1, E Willemse, A Digonnet

  • 1Département de Chirurgie, Institut Jules Bordet, Bruxelles. guy.andry@bordet.be

Revue Medicale De Bruxelles
|November 11, 2009
PubMed
Summary
This summary is machine-generated.

Thyroid cancer incidence has doubled, primarily due to early detection of small papillary tumors, but mortality remains stable. Differentiated thyroid cancers offer excellent survival with surgery as the main curative treatment.

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Area of Science:

  • Endocrinology and Oncology
  • Thyroid Cancer Research

Context:

  • Thyroid cancer incidence has doubled over two decades, largely due to enhanced early detection of small papillary tumors.
  • Despite increased incidence, thyroid cancer mortality rates have remained stable, indicating effective management strategies for differentiated types.

Purpose:

  • To review the current understanding of thyroid cancer diagnosis, prognosis, and treatment, focusing on differentiated (papillary and follicular) and anaplastic subtypes.
  • To emphasize the importance of thorough preoperative evaluation and surgical management, including total thyroidectomy and lymph node assessment, for optimal patient outcomes.

Summary:

  • Well-differentiated thyroid cancers (papillary, follicular) exhibit excellent long-term survival (95% at 30 years), with prognosis influenced by age, tumor size, and metastasis.
  • Surgical intervention is the cornerstone of treatment, necessitating comprehensive preoperative work-up (sonography, cytology, MRI). Total thyroidectomy is standard, with exceptions for select small tumors.
  • Radioactive iodine (I-131) ablation and long-term follow-up with thyroglobulin monitoring (aided by recombinant human thyroid-stimulating hormone) are crucial for managing recurrence risk in high- and intermediate-risk patients.

Impact:

  • Highlights the effectiveness of early detection and surgical management in maintaining stable mortality rates for differentiated thyroid cancers.
  • Underscores the multidisciplinary approach required for optimal patient care, from preoperative assessment to long-term surveillance and risk stratification.
  • Provides insights into the management of aggressive anaplastic thyroid carcinomas and the role of calcitonin in medullary thyroid cancer follow-up.