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  1. Childhood Extracranial Germ Cell Tumors Treatment (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK65877
    ... mediastinal primary tumors, and nine patients (31%) had Klinefelter syndrome. In the Centers for Disease Control and Prevention's large 2013 WONDER database, 3% of patients ...
  2. 47,XYY syndrome 
    https://medlineplus.gov/genetics/condition/47xyy-syndrome
    ... boys with 47,XYY syndrome or 47,XXY Klinefelter syndrome. Pediatrics. 2012 Apr;129(4):769-78. doi: ... Disorder in Males with Sex Chromosome Aneuploidy: XXY/Klinefelter Syndrome, XYY, and XXYY. J Dev Behav Pediatr. 2017 ...
  3. NLM Digital Collections - Abridged Index medicus : specimen fasciculus 
    Publication: Washington, D.C. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, 1965
    resource.nlm.nih.gov/0000044
    ... KamboJ VP Kar AB, KamboJ VP, Datta JK: Prevention of delayed Implantation in rats by means of an intrauterine foreign body. J Reprod FertU 8:139-40, Aug 64 Kamburoff TD Robinson GC, MiUer JR, DiU FJ, Kamburoff TD: Klinefelter's syndrome with the XXYY sex chromosome complex. With particular ...
  4. xmlmplus_topics_2025-06-07.xml 
    https://medlineplus.gov/xml/mplus_topics_2025-06-07.xml
    ... male</also-called><full-summary ><h3>What is Klinefelter syndrome (KS)?</h3> <p>Klinefelter syndrome (KS) is a <a href="https://medlineplus.gov/ ... maleinfertility.html">infertility</a>.</p> <h3>What causes Klinefelter syndrome (KS)?</h3> <p>KS is not inherited. It's ...
  5. xmlghr-summaries.xml 
    https://medlineplus.gov/download/ghr-summaries.xml
    ... published></health-condition-summary><health-condition-summary ><name >Klinefelter syndrome</name><ghr-page >https://medlineplus.gov/genetics/condition/ ...
  6. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... Gonadal Dysgenesis, Mixed C12.706.316.795.500 Klinefelter Syndrome C12.706.316.795.750 Turner Syndrome C12. ... Dysgenesis, Mixed C13.351.875.253.795.500 Klinefelter Syndrome C13.351.875.253.795.750 Turner Syndrome ...
  7. Incontinentia Pigmenti - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1472
    ... IP phenotype in males and a discussion of Klinefelter syndrome. Note: A group of pathogenic variants (mostly in ... mutation can be explained by somatic mosaicism or Klinefelter syndrome. Am J Hum Genet. 2001; 69 :1210–7. [ ...
  8. Extragonadal Germ Cell Tumors Treatment (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK65908
    ... The tumors are more frequent in individuals with Klinefelter syndrome and are associated with a risk of subsequent ... Nichols CR, Heerema NA, Palmer C, et al.: Klinefelter's syndrome associated with mediastinal germ cell neoplasms. J Clin ...
  9. Male Breast Cancer Treatment (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK65792
    ... Diseases associated with hyperestrogenism, such as cirrhosis or Klinefelter syndrome. Family health history: Definite familial tendencies are evident, ...
  10. Childhood Extracranial Germ Cell Tumors Treatment (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK65737
    ... germ cell tumors include: Having certain genetic syndromes : - Klinefelter syndrome may increase the risk of germ cell tumors ...
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