spina bifida(redirected from hydrocele spinalis)
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a congenital condition in which the meninges of the spinal cord protrude through a gap in the backbone, sometimes causing enlargement of the skull (due to accumulation of cerebrospinal fluid) and paralysis
spina bifida[¦spī·nə ′bī·fəd·ə]
A congenital anomaly characterized by defective closure of the vertebral canal with herniation of the spinal cord meninges.