XX testicular disorder of sex differentiation: case report

  • Bianco B
  • Christofolini D
  • Ghersel F
  • et al.
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Abstract

ABSTRACT The 46 XX, testicular sex differentiation disorder, or XX male syndrome, is a rare condition detected by cytogenetics, in which testicular development occurs in the absence of the Y chromosome. It occurs in 1:20,000 to 25,000 male newborns and represents 2% of cases of male infertility. About 90% of individuals present with normal phenotype at birth and are generally diagnosed after puberty for hypoganadism, gynecomastia, and/or infertility. The authors present the report of an XX male with complete masculinization and infertility.RESUMO O distúrbio da diferenciação sexual testicular 46,XX, ou síndrome do homem XX, é uma condição rara, na qual o desenvolvimento testicular ocorre na ausência do cromossomo Y detectado citogeneticamente. Incide em 1:20.000 a 25.000 recém-nascidos do sexo masculino e representa 2% dos casos de infertilidade masculina. Cerca de 90% dos indivíduos apresentam fenótipo normal ao nascimento e são, geralmente, diagnosticados após a puberdade por hipogonadismo, ginecomastia e/ou infertilidade. Os autores apresentam o relato de um homem XX com masculinização completa e infertilidade.

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Bianco, B., Christofolini, D. M., Ghersel, F. R., Gava, M. M., & Barbosa, C. P. (2011). XX testicular disorder of sex differentiation: case report. Einstein (São Paulo), 9(3), 394–396. https://doi.org/10.1590/s1679-45082011rc1862

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