[Echographic evaluation of the thyroid gland and urinary iodine concentration in school children from various regions of the State of São Paulo, Brazil]. / Avaliação ultra-sonográfica da tireóide e determinação da iodúria em escolares de diferentes regiões do Estado de São Paulo.
Arq Bras Endocrinol Metabol
; 48(6): 842-8, 2004 Dec.
Article
em Pt
| MEDLINE
| ID: mdl-15761558
We have examined, by ultrasonographic studies, the thyroid gland of 844 schoolchildren, aged between 6 and 14 years old (423 girls, 421 boys). There was a progressive increase of the thyroid volume with aging with a positive and significant correlation with the body surface area. The presence of enlarged thyroid gland was rarely seen, being present in only 1.6% of the studied cohort. A few thyroid gland abnormalities were noticed such as hemiagenesia (4 children), nodules and cysts and hypoechogenicity (total: 1.4% of all subjects examined). It was clearly demonstrated that the urinary excretion of iodine was elevated being above 300 microg Iodine/L in 53% of the schoolchildren examined. Assays for the iodine concentration in the domestic salt samples revealed values between 28.1 and 63.3 mgI/kg of salt. We concluded that the schoolchildren population of the State of São Paulo may be under an excessive daily ingestion of iodine. This may induce, if extrapolated to the general population, subclinical hyperthyroidism in the elderly and possibly an increment in the prevalence of chronic autoimmune thyroiditis.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Glândula Tireoide
/
Iodo
Tipo de estudo:
Diagnostic_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Child
/
Female
/
Humans
/
Male
País/Região como assunto:
America do sul
/
Brasil
Idioma:
Pt
Revista:
Arq Bras Endocrinol Metabol
Ano de publicação:
2004
Tipo de documento:
Article
País de publicação:
Brasil