Open spinal dysraphism with a myelomeningocele

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Open spinal dysraphism with a myelomeningocele

Synonyms: MMC | Myelomeningocele

A rare form of spina bifida cystica (saccular open neural tube defect (NTD)) characterized by a non-neurulated spinal cord (neural placode) on the surface of the cystic extension of dysplastic meninges (non-epidermised posterior meningocele). The spinal cord extends through a spina bifida (posterior vertebral defect) with typically everted or parallel laminae. Nerve roots are connected to the borders of the neural placode and are visible inside the sac. Myelomeningocele is characteristically associated with a Chiari II malformation. It can be either isolated or associated with split cord malformation.

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.

Reference: Access aggregated data from Orphanet at Orphadata.

Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http: // Data version September 2023.

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