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Updated: Aug 7, 2026
08:33
An Ex vivo Culture System to Study Thyroid Development
Published on: June 6, 2014
Summary
A baby girl had thyroid screening showing high thyroid-stimulating hormone (TSH) and low T4. Imaging revealed an undescended thyroid gland at the base of her tongue, not in the neck.
Area of Science:
- Pediatric Endocrinology
- Nuclear Medicine
- Congenital Disorders
Background:
- Thyroid hormone levels are crucial for infant development.
- Congenital hypothyroidism requires timely diagnosis and management.
- Thyroid imaging aids in identifying ectopic or absent thyroid tissue.
Observation:
- An infant presented with screening results indicating hypothyroidism (low T4, high TSH).
- Neck imaging did not locate thyroid tissue in the typical anatomical position.
- A radioactive iodine uptake scan showed activity at the base of the tongue.
Findings:
- The diagnostic findings are consistent with a diagnosis of lingual thyroid.
- A lingual thyroid represents an undescended thyroid gland.
- This ectopic thyroid tissue can cause hypothyroidism.
Implications:
- Early diagnosis of lingual thyroid is essential to prevent developmental issues.
- Management may involve thyroid hormone replacement therapy.
- Understanding thyroid development anomalies is critical in pediatric care.
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Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
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