PLEASE HELP!!! Anybody have experience with an enlarged ventricle in the brain?

Yesterday at my U/S they told me my baby has one enlarged ventricle in it's brain. They referred me to a place with better U/S technology to confirm this but I don't go til Friday and it's driving me crazy. What does this mean for my baby? I have read they can turn out normal or be slow or could also be mentally retarded or even have to terminate the pregnancy. If anybody knows anything from personal experience please share what happened. Thanks.