Klinefelter syndrome


  • Klinefelter syndrome (or 47,XXY or XXY syndrome) is a condition in which males have an extra X chromosome.

Clinical features


  • Klinefelter syndrome is the most common sex chromosome disorder in males and the second most common condition caused by the presence of extra chromosomes.

  • Incidence is 1/1000 males.

  • One in every 500 males has an extra X chromosome but does not have the syndrome.

You're Reading a Preview

Become a Clinical Tree membership for Full access and enjoy Unlimited articles

Become membership

If you are a member. Log in here