I just wanted to share that I was diagnosed with a SUA at my 18 week ultrasound. I immediately googled it, and found all kinds of awful things and very few stories of moms who said everything was fine. Of course that's how it works - people who have a great outcome don't usually share it because it isn't on their mind anymore. People with a bad outcome need to process that outcome, and lots of them do it by sharing their stories. I just wanted to share my experience to maybe put someone else's mind at ease (to the extent that it is possible).
We had multiple level two ultrasounds - all of which showed that the baby was perfect in every way. We had monthly growth scans - all of which showed that baby was in the 75-90% of fetal size/growth. We had all of the genetic testing short of an amnio - all of which came back with incredibly low risk for any type of genetic issue.
In August, I gave birth to a perfect, 8lb 7oz little girl. She has not one issue - NOTHING. Her heart is perfect (she was thoroughly examined), her kidneys are perfect (she had a renal ultrasound after birth), she has no genetic/chromosomal issues, and she clearly didn't have any growth restrictions.
All of my doctors all along the way said that they see SUA fairly frequently and that in just about every case, it's an isolated issue. That was my experience, and I thought I would pass it along in hopes that I can provide some comfort to a mom who is freaking out about this diagnosis.