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The Thyroid Gland01:23

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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.
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Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
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Hyperthyroidism I: Introduction01:25

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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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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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Graves Disease II: Pathophysiology01:24

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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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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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Gasless Endoscopic Thyroidectomy via the Trans-Axillary Approach
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Surgical strategy in thyroid disease.

M J Lando1, L A Hoover, L Zuckerbraun

  • 1Department of Otolaryngology, University of Kansas School of Medicine, Kansas City 66103.

Archives of Otolaryngology--Head & Neck Surgery
|December 1, 1990
PubMed
Summary
This summary is machine-generated.

This study reviews 311 thyroid disease surgeries, focusing on techniques for resident training. It details strategies for preserving nerves and glands, managing substernal goiters, and treating thyroid cancer.

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Area of Science:

  • Otolaryngology
  • Head and Neck Surgery
  • Endocrine Surgery

Background:

  • Thyroid disease surgical treatment is complex.
  • Training head and neck surgical residents requires specialized techniques.
  • A significant volume of thyroidectomies are performed at affiliated institutions.

Purpose of the Study:

  • To review surgical experience with 311 thyroid disease cases.
  • To describe an overall surgical strategy for thyroid disease.
  • To detail specific procedures for safe resident training in thyroid surgery.

Main Methods:

  • Review of 311 surgical cases over 8 years.
  • Description of surgical techniques focusing on nerve and parathyroid preservation.
  • Discussion of management strategies for thyroid cancer and substernal goiters.

Main Results:

  • Experience gained from 311 thyroid disease surgeries.
  • Development of specific techniques for recurrent laryngeal nerve and parathyroid gland preservation.
  • Established methods for managing substernal thyroids, partial thyroid surgery, and thyroid cancer.

Conclusions:

  • The described surgical strategy and techniques facilitate safe resident training.
  • Effective management of thyroid disease requires meticulous attention to anatomical structures.
  • Comprehensive preoperative assessment is crucial for developing optimal surgical plans.