2 doctors weighed in:

What does it mean if there is a big sac of fluiid behind the neck?

2 doctors weighed in
Dr. Stephen Pappachen
Obstetrics & Gynecology
1 doctor agrees

In brief: Cystic hygroma

This is the first thing that comes to mind.
I'm assuming this was seen on a fetal anatomy survey. If so, this can be associated with chromosomal issues, developmental concerns for the baby, etc... Get in touch with your ob/gyn asap.

In brief: Cystic hygroma

This is the first thing that comes to mind.
I'm assuming this was seen on a fetal anatomy survey. If so, this can be associated with chromosomal issues, developmental concerns for the baby, etc... Get in touch with your ob/gyn asap.
Dr. Stephen Pappachen
Dr. Stephen Pappachen
Thank
Get help from a real doctor now
Dr. Buck Parker
Board Certified,
13 years in practice
468K people helped
Continue
108,000 doctors available
Read more answers from doctors