Suspected omphalocele at 8 weeks

I went for my first ultrasound last monday, at 8 weeks, and the doctor
found out a big mass coming out of the baby's tummy, and they suspect
it can be omphalocele. It is more or less as big as the tummy itself.

I'm going back at 10 weeks for the second u/s, and if it's still there
they'll probably offer to do a CVS.

Is there anyone out there that saw this so early, and when did they
confirm the diagnosis?
And especially, did anyone see this, and then it disappeared and their
baby was fine?

Thanks!