How reliable is the information gained from a Level 2 Ultrasound?
A. In general I would recommend people think of ultrasound as the doctor doing his best to look at the shadow of an image. It is as much an art as it is a science. It is dependant to a huge degree on operator skill and experience. The absence of observing something is not the same as it not being there. As far as the Opitz G/BBB syndrome is concerned, I have hope that a skilled imager, knowing what to look for, can provide reassurance (or otherwise) but I also know that many, many times a child is born with the Opitz G/BBB syndrome without prior warning to the parents, despite having had an ultrasound prenatally..