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dc.contributor.authorLisboa, Hugo Roberto Kurtzpt_BR
dc.contributor.authorGross, Jorge Luizpt_BR
dc.date.accessioned2010-04-24T04:15:34Zpt_BR
dc.date.issued2002pt_BR
dc.identifier.issn0100-879Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/21171pt_BR
dc.description.abstractThe aim of the present study was to estimate the prevalence of goiter in schoolchildren in a formerly iodine-deficient region in southern Brazil by assessing the relationship between body surface area (m2) and thyroid volume (ml) measured by ultrasonography. A populationbased sample of 1,094 randomly selected schoolchildren (6 to 14 years; 556 boys and 538 girls) underwent clinical evaluation. A total of 119 (10.9%) children were diagnosed with goiter upon clinical examination according to WHO criteria (grade Ia: 65, grade Ib: 24, grade II: 29, grade III: 1). Of these, 85 underwent ultrasonography. In order to ascertain the absence of goiter in the 975 schoolchildren with a negative result upon clinical examination, one of ten children was randomly selected for ultrasonography. Sixty-two children agreed to be submitted to the exam. Thus, 147 schoolchildren were evaluated by ultrasonography (7.5-MHz transducer). Goiter was considered to be present when the thyroid volume:body surface area index was >6.2 ml/ m2. The estimated prevalence of goiter if all schoolchildren had been submitted to thyroid volume measurement by ultrasound was 7.2%; it was higher in the lower socioeconomic class (8.2%) than in the upper (7.8%) and middle classes (6.5%). In conclusion, the prevalence of goiter in schoolchildren of this region was higher than in other iodinesufficient areas, especially in lower socioeconomic classes. Goiter in this region may be associated with naturally occurring goitrogens that operate more intensively among less privileged individuals.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofBrazilian journal of medical and biological research. Ribeirão Preto, SP. Vol. 35, no. 10 (Oct. 2002), p. 1147-1152pt_BR
dc.rightsOpen Accessen
dc.subjectBócio endêmicopt_BR
dc.subjectGoiteren
dc.subjectPrevalenceen
dc.subjectSuperfície corporalpt_BR
dc.subjectFatores socioeconômicospt_BR
dc.subjectThyroid glanden
dc.subjectUltrasonographyen
dc.subjectDeficiência de iodopt_BR
dc.subjectEstudantespt_BR
dc.subjectCriançapt_BR
dc.subjectEstudos transversaispt_BR
dc.subjectBrasilpt_BR
dc.titleUltrasonographic determination of goiter prevalence in southern Brazilian schoolchildrenpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000342392pt_BR
dc.type.originNacionalpt_BR


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