Had our ultrasound yesterday (at 20 weeks) and was told that the babys head is lemon shaped. They looked at the spine and the head carefully and didn't find anything odd there. Everything else they saw seemed normal too. I'm obviously freaking out and is googling way to much right now. I stumbeld upon some threads here and they got me a little bit calmer...
But I still wonder if anyone has gotten the same news as me? that everything else was normal except the shape of the head, and it turned out that your baby was fine? No Chiari or SB...