H.L.
Hi I., I'm sorry for your worry and stress. I was high risk due to my age at pregnancy (44 when I had this baby). I opted for CVS (chorionic villi sampling) at 13 weeks because I felt I would drown in the stress of not knowing and just better to know than worry. I was more afraid the worry would cause a miscarriage. I did look up the choroid plexus cyst and while this is a down's marker, there is a 1% chance of down's and 99% chance of not. I was told that down's or any other chromosome abnormality can only be identified via CVS or amnio. I'm sure the specialist will discuss that with you. I actually found that when I discussed this with others, I was surprised by how many people had an amnio as well (CVS is much newer). For me, the peace of knowing was worth eliminating the stress so I could continue with a healthy pregnancy for my baby. Best of luck to you in whatever you decide.