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  • Title: [Thyroid function in children with Down's syndrome].
    Author: Colombo ML, Bona G, Quaglia P, Zaffaroni M, Maina D, Luotti D.
    Journal: Minerva Pediatr; 1992; 44(1-2):11-6. PubMed ID: 1532438.
    Abstract:
    The aim of the present study was to evaluate thyroid function in 45 Down's syndrome patients in order to verify the hypothesis of an increased risk of thyroid disorders associated with trisomy 21. A patient with subclinical hypothyroidism (TSH 16.6 microU/ml; T4 6.4 micrograms/dl) was diagnosed in a group of 28 subjects with Down's syndrome studied at a mean age of 6 years and 5 months using T3, T4, FT3, FT4, TSH assays and clinical examination. T4 and TSH values were also measured in 10 of these children at the neonatal screening. One infant presented transient neonatal hyperthyrotropinemia but later became euthyroid. The analysis of thyroid hormone values at the neonatal screening of other 17 subjects with Down's syndrome did not reveal other cases with thyroid function disorders. The results of this study highlight that altered thyroid functions are evident in children with trisomy 21 associated with heart anomalies. A careful clinico-endocrinological follow-up of patients with Down's syndrome is recommended in order to ensure an early diagnosis of thyroid function disorders and/or autoimmune diseases which might complicate the evolution of trisomy and negatively affect outcome.
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