raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:645388

Hemi-myelomeningocele

Synonyms: Open split-cord malformation

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Unknown
Status
active

A very rare form of composite dysraphism characterized by the presence of a split cord malformation and a myelomeningocele on one of the two hemicords. Hemicords can be in a single dural sac or in two separated dural sacs. Other spinal cord malformations can be associated. Due to the comparable prognosis it is considered as a subtype of myelomeningocele.

1

Names in Orphadata languages

10 of 12 languages
LangNameSynonyms
enHemi-myelomeningoceleOpen split-cord malformation
frHémi-myélomeningocèleMoelle épinière dédoublée ouverte
deHemimyelomeningozeleSplit-Cord-Malformation, offene
esHemimielomeningoceleMalformación abierta del cordón espinal hendido
itEmi-mielomeningoceleMalformazione aperta da fissurazione della corda spinale
nlHemi-myelomeningoceleHemimyelomeningocele · Open 'split cord'-malformatie
ptHemi-mielomeningoceloMalformação de espinha bífida aberta
plPrzepuklina oponowo-rdzeniowa z podziałem rdzenia= en
csHemi-myelomeningokéla= en
ukГемі-мієломенінгоцелеВідкрита вада розвитку розщеплення пуповини

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
MONDO0957454Evalidated
UMLSC5816710Evalidated

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 (1):

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