Choroid plexus cysts?

I had a sonogram yeaterday at 19 weeks.  They said everything with baby looked fine aside from some choroid plexus cysts in the brain.  I was told multiple times that since all the other anatomy looked great that I had little to worry about but they still scheduled me for a level 2 sonogram next week with a neonatologist just to get a second opinion.  I was also told 90% of the time the cysts usually resolve themselves as pregnancy progresses.  Has anyone had a history with these in your pregnancies?