This fetus was seen at 26 weeks GA and again at 28 weeks for a size and dates discrepancy.There was a mild but definite decrease in amniotic fluid volume in both exams. There were no anatomic malformations, growth is normal. The 3D image at 28 weeks was essentially identical to another face view in the earlier exam.
What is the diagnosis?
There is enough information for a relatively specific diagnosis, which will be revealed and discussed after those of you who do OB ultrasound exams make your comments.