I have had 2 babies with choroid plexus cysts. Without any other genetic markers they almost always go away by 24 weeks and cause no harm at all.
With ds it was there at 17 weeks, 20 weeks and gone at 24. He had no other markers. With dd it was gone at 27 weeks, she did have a soft marker on her heart but it ended up being nothing.
As long as there isn't any other issue with baby I wouldn't get too upset, it almost always is nothing. In fact it is listed as 99 percent harmless in babies. (Less than one percent of babies with cysts have trisomy 18).
Did they say there were any other markers or that they will re scan you in 4 weeks?
Last edited by ktmelody; 01-25-2013 at 05:39 PM.