Cisterna magna or Arachnoid cyst in Fetus Brain

[timmy_50]

My Wife is in 7th month of Pregnancy. She had anomaly Scan of fetus and found that there is Giant Cisterna Manga in brain and it is about 1.4cm in diameter. First Radiologist identified it as Arachnoid cyst but Second Radiologist (he seems to be right) identified it as Cisterna Manga. We are much worried about this finding. We like to asks following questions form worthy experts on this forum:-
1. What are the causes of these cysts?
2. Are these cysts harmful?
3. What are their side effects after birth?
4. Do we have some treatment before birth or after birth?
5. Can a person live a complete or normal life with these cysts?
thanks

[timmy_50]

Thanks dear

[rumpled]

I see that you posted this in a few places - I would also suggest that you try the pregnancy forums as they may have seen this come up before.

This is a patient forum - so there are no experts here.

http://www.medhelp.org/posts/Neurology/what-is-a-giant-cisterna-magna/show/478150
Was a previous question answered by a doctor - so it may set your mind at ease.

The only other issue that came up in my research was that there may be a possibility of Dandy-Walker syndrome when this is found so testing may be done now to rule it in or out.