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A, Sagittal SS-FSE T2-weighted image in 39-gestational-week-old fetus demonstrates vermian hypoplasia and enlarged posterior fossa with cyst, consistent with a Dandy-Walker malformation. An occipital meningocele is also identified.
B, Coronal SS-FSE T2-weighted image demonstrates diffusely abnormal sulcal pattern for gestational age, with areas of polymicrogyria (arrow). There is associated diminished white matter volume and ventriculomegaly.
