Dandy-Walker Malformation

…ventricle and the cisterna magna that resembles a cleft. A small cisterna magna might signal that a neural tube defect (i.e., spina bifida) is present. Hydrocephalus (“water in the brain”)…

Anencephaly

…A family history of spina bifida and/or anencephaly is one of the strongest risk factors for recurrence. Most cases of anencephaly have a recurrence risk of between 2% and 5%…