Spina Bifida Occulta

A common congenital midline defect of fusion of the vertebral arch without protrusion of the spinal cord or meninges. The lesion is also covered by skin. L5 and S1 are the most common vertebrae involved. The condition may be associated with an overlying area of hyperpigmented skin, a dermal sinus, or an abnormal patch of hair. The majority of individuals with this malformation are asymptomatic although there is an increased incidence of tethered cord syndrome and lumbar SPONDYLOSIS. (From Joynt, Clinical Neurology, 1992, Ch55, p34)

Year introduced: 1991

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Tree Number(s): C10.500.680.800.750, C16.131.666.680.800.750

MeSH Unique ID: D016136

Entry Terms:

• Occult Spina Bifida
• Spina Bifida, Occult
• Spinal Bifida, Closed
• Closed Spinal Bifida
• Dermal Sinus
• Sinus, Dermal

Previous Indexing:

• Spinal Dysraphism (1966-1977)

All MeSH Categories
Diseases Category
Nervous System Diseases
Nervous System Malformations
Neural Tube Defects
Spinal Dysraphism
Spina Bifida Occulta

All MeSH Categories
Diseases Category
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Congenital Abnormalities
Nervous System Malformations
Neural Tube Defects
Spinal Dysraphism
Spina Bifida Occulta