Choroid Plexus Cyst

Has anyone been told that they found a Choroid Plexus Cyst on their previous ultrasounds? After our anatomy scan today my midwife said they found a bilateral Choroid Plexus Cyst on the baby's brain. She said he looks healthy otherwise and the Cyst could be benign. But it could also be a indicator that the baby has a genetic disorder, such as Trisomy 18. Has anyone else gone through this? We're thinking about getting the genetic screening done now just so we know exactly what we're dealing with.