Do all babies with Down syndrome have an absent nasal bone?
Do all babies with Down syndrome have an absent nasal bone? No. Babies with Down syndrome have nose bones, but their noses have flat bridges, with small nasal bones, or at least too small to see on a scan. What would happen if the nasal bone wasn't seen on ultrasound? What Happens if the Nasal Bone Can't Be Seen? The presence or absence of a nasal bone on the scan will help your sonographer to assess the probability of Down's syndrome and other chromosomal abnormalities. However, it is not enough to determine the probability by itself and cannot be used...