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FIG 4. A, Axial and B, right parasagittal MR images in a 21-week fetus after therapeutic abortion performed on the basis of a parietal meningocele on sonograms. This was reported as such at autopsy. MR images show that there is also brain and ventricle in the abnormality (therefore, technically a meningoencephalocystocele). In addition, the MR images show an area of cortical dysplasia (arrow) in the right frontal lobe that was not reported at sonography or autopsy. This was confirmed at consensus review. Note the generalized reduction in volume of migrating neurons in the right cerebral hemisphere.
