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Klinefelter syndrome

  1. Home
  2. Cancer information
  3. Resources
  4. Glossary
  5. Klinefelter syndrome
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Description

An inherited sex chromosome disorder in which men have at least one extra X chromosome. Signs include small testicles, enlarged breasts and lack of facial and body hair.

Klinefelter syndrome is associated with an increased risk of testicular cancer.

Also called XXY syndrome.

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