<prompt> Answer this question truthfullyCan you explain the differences between cephalocele, meningoencephalocele, and meningocele?  <response>: <reason> Cephalocele refers to the herniation of CNS meninges through a midline defect in the skull. Frontal cephaloceles have a better prognosis compared to other locations. Meningoencephalocele, or encephalocele, occurs when the brain and meninges herniate out through an osseous defect in the cranium. Most 75 occur in the occipital region, while frontal and parietal locations constitute the remaining 25. Meningoencephalocele occurs in approximately 1 in 10,000 pregnancies, and the mortality rate is estimated at 50, with 75 of survivors experiencing mental retardation. Meningocele refers to the herniation of only the meninges, or CSF fluid, without the brain tissue. 