http://en.wikipedia.org/wiki/Pseudohermaphroditism

Please feel free to read it again. Because apparently you missed something. 

Specifically this part...

"In some cases, the external sex organs look intermediate between the typical clitoris or penis. In other cases, the external sex organs have an appearance that does not look intermediate, but rather has the appearance that would be expected to be seen with the "opposite" gonadal tissue. Because of this, pseudohermaphroditism is sometimes not identified until puberty."