I am 15+9 and my doctor saw a CPC on my scan today. Apparently it can be a soft marker for Trisomy 18. It also happens in many "normal" pregnancies and we will have to wait for our next scan to see if there are any other markers to determine risk factor. Has anyone else had experience with this? Our nuchal testing gave a less than 1:10000 chance of any Trisomy so I'm trying to look at the positive and the fact that most of the time this is not a concern.