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T3 thyrotoxicosis in a child
American Journal of Diseases of Children (1960)
|April 1, 1978
Insights
We describe a rare case of T3 thyrotoxicosis in a 5-year-old boy with elevated T3 and normal T4 levels. Low dietary iodine may contribute to this childhood thyroid condition.
Area of Science:
- Pediatric Endocrinology
- Thyroid Disorders
- Metabolic Diseases
Background:
- Thyrotoxicosis, or hyperthyroidism, is a condition characterized by excessive thyroid hormone production.
- While T4 thyrotoxicosis is common, T3 thyrotoxicosis is rare, particularly in pediatric populations.
- Accurate diagnosis relies on specific hormone level measurements.
Observation:
- A 5-year-old boy presented with symptoms suggestive of hyperthyroidism.
- Initial laboratory tests revealed normal serum thyroxine (T4) levels.
- Significantly elevated serum triiodothyronine (T3) levels were observed.
Findings:
- The diagnostic criteria for T3 thyrotoxicosis were met, with elevated T3 and normal T4.
- This case highlights the infrequent occurrence of T3 thyrotoxicosis in childhood.
- The specific hormonal profile differentiates it from more common forms of hyperthyroidism.
Implications:
- This case underscores the importance of considering T3 thyrotoxicosis in pediatric hyperthyroid patients with atypical hormone levels.
- Low dietary iodine intake is postulated as a potential contributing factor, suggesting a need for nutritional assessment.
- Further research into the etiology and prevalence of T3 thyrotoxicosis in children is warranted.
Abstract:
We report the case of a 5-year-old hyperthyroid boy with normal serum T4 levels are elevated serum T3 levels. The findings are diagnostic of T3 thyrotoxicosis, a condition that has been very infrequently reported in childhood. We postulate that low dietary iodine intake may be an etiologic factor in some cases of T3 thyrotoxicosis.