La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular

Background: A secular trend towards a younger age of puberty onset has been reported in Chilean girls. Aim: To evaluate the age of onset of puberty and prevalence of early puberty in Chilean boys. Material and Methods: A pediatric endocrinologist examined 319 children attending schools in central Sa...

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Autores principales:	Gaete,Ximena, García,Roberto, Riquelme,Joel, Codner,Ethel
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2015
Materias:	Adolescent Growth Puberty
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872015000300003
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spelling	oai:scielo:S0034-988720150003000032015-08-11La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicularGaete,XimenaGarcía,RobertoRiquelme,JoelCodner,Ethel Adolescent Growth Puberty Background: A secular trend towards a younger age of puberty onset has been reported in Chilean girls. Aim: To evaluate the age of onset of puberty and prevalence of early puberty in Chilean boys. Material and Methods: A pediatric endocrinologist examined 319 children attending schools in central Santiago. Pubertal development was assessed by testicular volume (TV) and genital inspection (GI) using Tanner graduation. Precocious and early puberty development was diagnosed if TV ≥ 4 ml or GI > stage 2 occurred in boys younger than 9 years and at 9-10 years of age, respectively. Results: Pubertal onset occurred at 10.2 ± 1.5 years according to TV and at 11.1 ± 1.6 years according to GI (p < 0.01). Before the age of nine, 15.2% of children had a VT ≥ 4 ml, 3% had genital changes in GI and only 3% had both changes simultaneously. Early puberty was observed in 23.8% of children according to TV and 9.5% according to GI. However, no child of less than 11 years old had a TV ≥ 4 ml, genital changes and pubic hair simultaneously. Late pubertal stages occurred at the same age according to both criteria used. Body mass index z score was not associated with the age of pubertal onset. Conclusions: Testicular enlargement occurs one year earlier than changes in genitalia according to inspection. Testicular growth, but not late stages of puberty, are occurring one year earlier than previously reported in Chile 10 years ago.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.143 n.3 20152015-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872015000300003es10.4067/S0034-98872015000300003
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Adolescent Growth Puberty
spellingShingle	Adolescent Growth Puberty Gaete,Ximena García,Roberto Riquelme,Joel Codner,Ethel La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
description	Background: A secular trend towards a younger age of puberty onset has been reported in Chilean girls. Aim: To evaluate the age of onset of puberty and prevalence of early puberty in Chilean boys. Material and Methods: A pediatric endocrinologist examined 319 children attending schools in central Santiago. Pubertal development was assessed by testicular volume (TV) and genital inspection (GI) using Tanner graduation. Precocious and early puberty development was diagnosed if TV ≥ 4 ml or GI > stage 2 occurred in boys younger than 9 years and at 9-10 years of age, respectively. Results: Pubertal onset occurred at 10.2 ± 1.5 years according to TV and at 11.1 ± 1.6 years according to GI (p < 0.01). Before the age of nine, 15.2% of children had a VT ≥ 4 ml, 3% had genital changes in GI and only 3% had both changes simultaneously. Early puberty was observed in 23.8% of children according to TV and 9.5% according to GI. However, no child of less than 11 years old had a TV ≥ 4 ml, genital changes and pubic hair simultaneously. Late pubertal stages occurred at the same age according to both criteria used. Body mass index z score was not associated with the age of pubertal onset. Conclusions: Testicular enlargement occurs one year earlier than changes in genitalia according to inspection. Testicular growth, but not late stages of puberty, are occurring one year earlier than previously reported in Chile 10 years ago.
author	Gaete,Ximena García,Roberto Riquelme,Joel Codner,Ethel
author_facet	Gaete,Ximena García,Roberto Riquelme,Joel Codner,Ethel
author_sort	Gaete,Ximena
title	La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
title_short	La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
title_full	La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
title_fullStr	La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
title_full_unstemmed	La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
title_sort	la pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular
publisher	Sociedad Médica de Santiago
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872015000300003
work_keys_str_mv	AT gaeteximena lapubertadenninoschilenosmuestraunadelantamientoeneliniciodelcrecimientotesticular AT garciaroberto lapubertadenninoschilenosmuestraunadelantamientoeneliniciodelcrecimientotesticular AT riquelmejoel lapubertadenninoschilenosmuestraunadelantamientoeneliniciodelcrecimientotesticular AT codnerethel lapubertadenninoschilenosmuestraunadelantamientoeneliniciodelcrecimientotesticular
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La pubertad en niños chilenos muestra un adelantamiento en el inicio del crecimiento testicular

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