At this link there is a picture 8/14 it's a fetus at 20 weeks and I tell I gotta say the legs look abnormal to me. jmo idk
http://www.medicinenet.com/fetal_development_pictures_slideshow/article.htm
I'm 24 weeks pregnant now myself. Ultrasound pictures, especially 3D ultrasound pictures can look very off, like there is something wrong, because the machines take pictures in "slices" or "planes" and then stack them together to create the image. If the plane that the image is on is slightly off the body part in the frame, it will look like pieces are "missing" when they really aren't. It's just that that particular frame doesn't have all of the information in it to create a full image.
In some of the ultrasounds I've had, the way that they move the wand can make it look like the baby has a huge hole in it, or that body parts are deformed. As soon as the angle of the wand is change, voila, there is the normal hand, foot, head...whatever.
I am going on the presumption that the mother likely had a blood test and ultrasound around 12 weeks, as is usually recommended, which would have been before the embolism, and that they may know that the risk factors for chromosomal issues is low. The Dr's can diagnose physical deformity with ultrasound, but they likely won't be able to determine if there is any brain function issues due to lack of oxygen until they deliver a very premature baby.
I haven't read through all of the threads to find out the exact details of what happen to Marlise, because being almost at the same gestational point as she is, it's a little upsetting for me. I thought I had read that she was without oxygen for about an hour. Did her heart actually stop beating? I would think that if she had not been breathing for that length of time, and her heart had stopped beating, that the fetus would have quickly died inside her. Since it didn't, I wonder if she actually didn't stop breathing at all, or not until just a few minutes before her husband found her. Still enough time for her brain to become dead, but not long enough for the fetus to have been deprived of oxygen too.
I personally would want them to do what they could to save my baby, even if it meant using me as an incubator...because that is exactly what I am doing right now...incubating my very much wanted baby.
Edited to add...I haven't read back the last few pages...I'm going to do that now...they diagnosed the baby as deformed?