raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:645334

Retained medullary cord

Type
Morphological anomaly
Group
Disorder
Inheritance
Unknown
Status
active

A rare closed dysraphism with terminal stalk characterized by persistant 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.

1

Names in Orphadata languages

10 of 12 languages
LangNameSynonyms
enRetained medullary cord
frMoelle épinière terminale persistante (non regressée)
deRetained Medullary Cord
esCordón medular retenido
itCorda midollare ritenuta
nlPersisterend terminaal ruggenmerg
ptMedula ancorada
plZakotwiczenie rdzenia kręgowego
csZachovaný míšní provazec
ukЗбережений спинномозковий канатик

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q76.0NTBTattributedvalidated
MONDO0958348Evalidated
MONDO958348Evalidated
UMLSC5816811Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card