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Related Concept Videos

Goiter01:27

Goiter

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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...
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Hyperthyroidism II: Pathophysiology01:27

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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...
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The Thyroid Gland

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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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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...
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Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

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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,...
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Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

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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

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Minimal Invasive Resection of Large Retrosternal Thyroid Goiter
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Primary mediastinal goiters.

Fayçal El Oueriachi1, Mohamed Massine El Hammoumi1, Adil Arsalane1

  • 1Department of thoracic surgery, Mohamed V Military Teaching Hospital, Appt 15, Imm 18, Jnane Nahda, Hay Nahda, Rabat, Morocco.

Springerplus
|October 4, 2014
PubMed
Summary

Primary mediastinal goiters (PMG) are rare but should be considered in mediastinal mass diagnoses. Surgical removal via a transthoracic approach ensures safe and complete excision of these adenomatous goiters.

Keywords:
Ectopic goiterMediastinumSurgeryTransthoracic approach

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Area of Science:

  • Endocrinology
  • Thoracic Surgery
  • Pathology

Background:

  • Primary mediastinal goiters (PMG) are exceptionally rare, with limited documented cases in medical literature.
  • These masses can present diagnostic challenges within the mediastinum.

Purpose of the Study:

  • To report two unique cases of primary mediastinal goiters.
  • To discuss the clinical presentation, surgical management, and pathological findings of these rare goiters.

Main Methods:

  • Case report of two patients diagnosed with primary mediastinal goiters.
  • Surgical intervention using a transternal approach for complete goiter removal.
  • Histopathological examination to confirm the adenomatous nature of the goiters.

Main Results:

  • Two cases of primary mediastinal goiters were successfully treated.
  • Pathology confirmed the adenomatous nature of the goiters.
  • Transternal approach facilitated complete resection.

Conclusions:

  • Primary mediastinal goiters are a crucial consideration in the differential diagnosis of mediastinal masses.
  • A transthoracic surgical approach is recommended for safe and effective excision of PMGs.