retained medullary cord
Findings
No curated finding names retained medullary cord yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A rare closed dysraphism with terminal stalk characterized by persistent rudimentary spinal cord below conus. It contains non-functional neural tissue and is typically isolated. The diagnostic is suggested by attenuated conus without fat, further confirmed by pathological analysis (glioneuronal core with ependyma-lined lumen, nerve roots, and dorsal root ganglia). Differential diagnostic with intraoperative neurophysiological monitoring is mandatory as neuroimaging fails to distinguish it from functional conus.
Definition from the Mondo Disease Ontology (MONDO:0958348), read 2026-09-29. CC BY 4.0.
Where it sits
- A kind of