I went for my 20 week scan yesterday and was told that everything was perfect but they had found what they call a choroid plexus cyst (cp cyst) on the right side of the baby's brain. The midwife said it isn't a cyst as such but a small fluid blockage (it measures about 6mm) that should clear itself. She said it was nothing to worry about - but of course I am now really worried - and said that they can act as a marker for Edwards Syndrome if they are in conjuction with other things such as shortened limbs, heart problems ect. however she said there were no other signs and they are quite common on their own and should disappear between 24 and 28 weeks. She didn't want to give me another scan but i have insisted and booked one for 28 weeks to put my mind at rest. Has anyone else had this and can put my mind at rest that everything is going to be alright cos right now I am really worried? thanks Fiona