A member asked:

When does ancephaly develop? what age should they see it on ultrasound?

A doctor has provided 1 answer

Absent brain: Most of the major organs have formed by 8-12 weeks so it may be possible to detect some defect at this early age. Certainly with the blood tests for neural tube defects, the fetus is large enough by 18-20 weeks to tell for sure, which is when most fetal anatomy us take place.

Answered 6/11/2015

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