Compression, infraction, hydrocephalus, and meningocele are common.
If placed over one of the fontanelles, a nævus may derive pulsation from the brain, and so simulate a meningocele.
A meningocele, as it contains no nerve elements, may be translucent.
It is, however, often difficult to distinguish between a meningocele and meningo-myelocele.
meningocele me·nin·go·cele (mə-nĭng'gə-sēl')
Protrusion of the meninges of the brain or spinal cord through a defect in the skull or spinal column forming a cyst filled with cerebrospinal fluid.