a condition that affects fewer than one in a million people worldwide, according to the report
If the docotrs are giving you a 1 in a million percentage rate that your child will be born with a strange/rare illness .. then no you probably shouldn't abort.
Those type statistics are not hard evidence .. the type they can give you when your child is missing chromosones, organs on the outside of the body, and/or missing bone matter .. are two completely different things. 3D ultrasounds can and do show you birth anomolies in the womb, there are no denying those right in front of your face.