I had an ultrasound of my 26-week-old fetus and found a defect of bilateral ventriculomegaly of 11mm and 13mm and no transparent septum (agenesis of the corpus callosum). Doctor, can you tell me if a 26-week-old fetus has bilateral ventriculomegaly and no transparent septum, is it dangerous? Thank you, doctor.

DiGeorge syndrome, also known as trisomy 22, is a common syndrome that causes congenital heart disease and many other birth defects. Genetic testing for DiGeorge syndrome is a prenatal screening and diagnosis method that can help reduce the symptoms and mortality caused by the syndrome.