 There is an approximately 74 CC x 50 AP x 70 ML mm encephalocele containing brain tissue covered in dura herniating through a large occipital calvarial defect. At least 50% or more brain tissue appears to have herniated through the calvarial defect. The head appears proportionally smaller than normal.The lateral ventricles are not normally formed, however there may be a rudimentary/dysmorphic lateral ventricles in the herniated portion of the brain. Dysmorphic cerebellar tissue is suspected on some images within the inferior portion of the encephalocele with a possible rudimentary fourth ventricle. The brainstem is not well depicted, and the origin of the cervical spinal cord is not clearly seen, though it may arise within the encephalocele. A normal interhemispheric falx and corpus callosum are not identified.There is apparent signal abnormality in the superficial soft tissues of the lower lumbar/sacral region posterior to the spine best seen on series 3 image 21 and series 8 image 22. Imaging quality is suboptimal at least partly due to technical constraints including fetal movement, among other factors. However, this abnormality may correlate with a suspected spine abnormality on prior fetal ultrasound. These findings may represent spinal dysraphism with possible meningocele/lipomeningocele or perhaps myelomeningocele.The remaining spinal canal appears grossly well-formed.
1. Large occipital encephalocele containing more than half of the brain tissue with dysmorphic appearance of the brain as described above.2. Finding suggesting lumbar/lumbosacral dysraphism, as questioned on the prior fetal ultrasound. Superimposed meningocele/myelomeningocele are not excluded.