I've shared my story about how my son was misdiagnosed as having Down Syndrome. We refused to terminate. You can read that story here:
My First Misdiagnosed Miscarriage at 12 Weeks!
I hear stories like this quite a bit and, indeed, here is yet another story of a family who was given the option to terminate:
I do wonder how many women terminate their pregnancies when everything really was fine. I know, with my own ultrasound, our son showed the markers of Down Syndrome. Really, though, even had he had it, we wouldn't have minded. He was our son and like any parents, we were going to adore him to the moon and back. We were surprised when he was born without Down Syndrome though.
If you are going through a diagnosis of this nature, I urge you to seek non-medical counseling as well. All too often the medical community just sees the diagnosis and you need to talk to somebody who sees the bigger picture.