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Endotracheal Intubation I: Procedure01:15

Endotracheal Intubation I: Procedure

Endotracheal or ET intubation is a critical medical procedure used to secure a patient's airway, often in acute respiratory distress, apnea, upper airway obstruction, ineffective clearance of secretions, high risk for aspiration, or during general anesthesia.
The ET tube comprises various components, including a standard adaptor to attach a bag-valve-mask (BVM) or ventilator, a cuff, a pilot balloon, and radiopaque markings along its length to measure the insertion distance. The tube sizes...
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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: Pathophysiology

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Related Experiment Video

Updated: Jul 13, 2026

Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
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Published on: November 10, 2014

Intratracheal ectopic thyroid: case report and review.

Bariş Karakullukçu1, M Güven Güvenç, Harun Cansiz

  • 1Department of Otolaryngology-Head and Neck Surgery, Istanbul University, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey.

Ear, Nose, & Throat Journal
|August 19, 2007
PubMed
Summary

Intratracheal ectopic thyroid tissue, a rare cause of airway obstruction, can mimic asthma symptoms. Surgical excision led to successful treatment after misdiagnosis in a 40-year-old man.

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Area of Science:

  • Pulmonology
  • Endocrinology
  • Surgical Pathology

Background:

  • Ectopic thyroid tissue in the trachea is an uncommon congenital anomaly.
  • Symptoms like airway obstruction can be mistaken for common respiratory conditions such as bronchial asthma.
  • Early and accurate diagnosis is crucial for effective management.

Observation:

  • A 40-year-old male patient presented with symptoms suggestive of bronchial asthma.
  • Further investigation revealed subglottic ectopic thyroid tissue and multinodular goiter.
  • The patient had a history of misdiagnosis as bronchial asthma.

Findings:

  • Intratracheal ectopic thyroid tissue can lead to significant airway compromise.
  • Multinodular goiter can coexist with tracheal thyroid tissue.
  • Surgical excision via an external approach is a viable treatment option.

Implications:

  • Highlights the importance of considering rare diagnoses in cases of persistent respiratory symptoms.
  • Emphasizes the need for thorough diagnostic workups to differentiate ectopic thyroid tissue from asthma.
  • Provides insights into the clinical presentation and surgical management of intratracheal thyroid tissue.