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Sonographic evaluation of the thyroid size in neonates: Neonatal Thyroid Size by Ronald Freire; Osmar Monte; Eduardo Kiyoshi Tomimori; Regina Maria Catarino; Thais Sterza; Thatyana Rocha; Katia Cristine Carvalho Pereira; Hortensio Simões Mattos; Leonardo Barros Fagundes; Marcelo Martins Liberato; Luiz Wagner Rodrigues dos Santos; Adeberto Pereira; Terezinha Cintra; Christina Hegner; Daniela Lube; Mylene Murad is a Medicine article available to read on EtoBox.
What is Sonographic evaluation of the thyroid size in neonates: Neonatal Thyroid Size about?
## Purpose: To validate the use of the ratio between the total transverse diameters of the thyroid lobes (th) and the width of the trachea (tr)-the th:tr or yasumoto ratio-as a sonographic method for estimating thyroid size, and to determine reference values for this ratio and for thyroid volume in neonates. ## Methods: In this cross-sectional study, we evaluated thyroid size according to the yasumoto ratio and the thyroid volume calculated with the ellipsoid formula in 125 healthy, euthyroid, iodine-sufficient, full-term neonates. ## Results: The mean thyroid gland volume was 1.00 ml (95% confidence interval, 0.95-1.03 ml), and the mean yasumoto ratio was 2.29 (95% confidence interval, 2.21-2.31). the lower- and upper-limit results falling within 2 sds of the mean were 0.45 ml and 1.53 ml for the volume and 1.71 and 2.87 for the ratio. ## Conclusions: In full-term, euthyroid, iodine-sufficient neonates, the normal reference interval for thyroid volume measured on sonography was 0.45-1.53 ml and that for the yasumoto ratio was 1.71-2.87. a ratio of 1.7 may be applied as the cutoff value for sonographic diagnosis of thyroid dysgenesis in full-term neonates with congenital hypothyroi
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- Author
- Ronald Freire; Osmar Monte; Eduardo Kiyoshi Tomimori; Regina Maria Catarino; Thais Sterza; Thatyana Rocha; Katia Cristine Carvalho Pereira; Hortensio Simões Mattos; Leonardo Barros Fagundes; Marcelo Martins Liberato; Luiz Wagner Rodrigues dos Santos; Adeberto Pereira; Terezinha Cintra; Christina Hegner; Daniela Lube; Mylene Murad
- Publisher
- Wiley
- Published
- 2014
- Language
- EN
- Field
- Medicine (Health Sciences)