Rare diseases · Sign or symptom

Myelomeningocele

HP:0002475

What it means

Protrusion of the meninges and portions of the spinal cord through a defect of the vertebral column.

Meningomyelocele can result if more than one or two vertebral bodies are affected by spina bifida. The meningomyelocele is usually covered by a thin, vulnerable membrane. Meningomyelocele is generally accompanied by neurological deficits.

Rare diseases that can present with this22

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Meningomyelocele · Spina bifida cystica

Myelomeningocele

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.