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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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The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
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The Parathyroid Glands00:59

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The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
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Updated: Jun 28, 2025

Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
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Prenatal presentation of a hyperfunctioning thyroid nodule.

Marinda G Scrushy1, Christopher Liu2, Ximena Lopez3

  • 1Department of General Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA.

Journal of Pediatric Endocrinology & Metabolism : JPEM
|April 22, 2024
PubMed
Summary
This summary is machine-generated.

Congenital hyperthyroidism can rarely stem from non-autoimmune causes like toxic adenomas, not just maternal Graves' disease. Early diagnosis and treatment are crucial for affected newborns.

Keywords:
hyperfunctioning thyroid adenomahyperthyroidismneonatal hyperthyroidismthyroid nodule

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Area of Science:

  • Neonatal endocrinology
  • Pediatric surgery
  • Fetal medicine

Background:

  • Fetal and neonatal hyperthyroidism are typically associated with maternal Graves' disease.
  • Rare non-autoimmune etiologies exist, often leading to diagnostic and therapeutic challenges.
  • Congenital hyperthyroidism can result in significant fetal and neonatal morbidity if not promptly addressed.

Observation:

  • A case of congenital hyperthyroidism presenting with fetal tachycardia is described.
  • The condition was attributed to a fetal toxic adenoma, a rare non-autoimmune cause.
  • Initial medical management postnatally was followed by surgical intervention.

Findings:

  • Thyroidectomy was the definitive treatment for the congenital hyperthyroidism caused by the toxic adenoma.
  • This case underscores the importance of considering non-autoimmune causes in fetal hyperthyroidism.
  • Persistent symptoms and long-term health issues can arise from delayed or incorrect diagnosis.

Implications:

  • Highlights a critical differential diagnosis for fetal hyperthyroidism beyond maternal Graves' disease.
  • Suggests the need for a broader diagnostic workup in cases of unexplained fetal hyperthyroidism.
  • Emphasizes the potential role of surgical intervention in specific non-autoimmune congenital hyperthyroid conditions.