Choroid Plexus Cyst at 20 Wk U/S

We had our first ultrasound at 20 weeks and had what appeared to be a perfectly healthy, beautiful baby. While our baby girl's heart, spine, feet, hands, and profile were noted to be perfect and "right on target" by our doctor, but he also pointed out a single Choroid Plexus Cyst. Talk about bringing us down from Cloud 9! The doctor told us not to worry (good luck with that!) but we did opt to have the quad screen and spoke with a genetic counselor immediately, so now I'm trying not to stress for two weeks while we await the results. The CPC was the only abnormal finding, but we do know that this is known to be a "soft marker" for chromosomal abnormalities. Has anyone had a CPC on their u/s and ended up having healthy babies? I'm 26, a first time mother, and have no family history on neither my nor my husband's side of Edward's/Down Syndome/miscarriage. I'm just trying to somewhat put my mind at ease while I wait...