A newly published study using ultrasound scans to check for fetal defects found that children who went on to develop autism spectrum disorder (ASD) had a greater head and abdominal size at 20 weeks in the womb compared with children who did not develop ASD. This discovery could offer a small window into fetal development that could help doctors diagnose and treat ASD earlier. However, these findings were presented at a medical conference and are considered preliminary since they have not yet undergone a peer review process.
International Congress of the Royal College of Psychiatrists, June 2014