myelomeningocele

Noun
  1. A congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column;
    Frequently accompanied by hydrocephalus and mental retardation (synset 114490979)
    is a type of: birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder - a defect that is present at birth

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