Thanks for your query.
First and foremost, any infection , in which the Ig - G ( immunoglobulin G
) is positive, indicates a past infection, and hence immunity to it.
You should only worry if the CMV / toxoplasmosis
- any of these have the Ig - M positive.
In that case, you should be taking specific treatment as advised by your healthcare provider.
Otherwise, for isolated rise in Ig - G, please do not worry.
Meanwhile, I hope a fetal autopsy was performed to rule out other causes of isolated ventriculomegaly