In the 1970's, studies indicated that as many as 1 in 500 males could have an extra chromosome that leads to the XXY combinantion that is known as Klienfelter Syndrome. Even though it is one of the most common chromosomal abnormalities, a very small percentage of males ever develop the symptoms. For those who develop the symptoms, one of which is breast development, their risk of getting Breast cancer is almost equal to that of women.
About 1/1000 to 1/500 males have Klinefelter's syndrome.
There are many places where you can find some pictures of Klienfelter's Syndrome. You can check at your local library.
Klienfelter SyndromeKlienfelter Syndrome causes a male's breasts to develop much like a woman's. It raises the chances of breast cancer for that male to almost equal with the chances for women.
Males
The disease occurs worldwide, but is most prevalent in Japan, the Middle East, and in the Mediterranean region. There is a wider prevalence among males than females in a ratio of two to one.
kleinfelters syndrome
Males
Lesch-Nyhan syndrome is a rare genetic disorder that affects males. Males with this syndrome develop physical handicaps, mental retardation , and kidney problems.
male
male
males
estimates range from 1:4000 to 1:6395.