raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2789

Lateral meningocele syndrome

Synonyms: Lehman syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Infancy, Neonatal
Status
active

A rare genetic neurological disorder characterized by multiple lateral meningoceles, distinctive facial dysmorphism (including hypertelorism, downslanting palpebral fissures, posteriorly rotated ears, micrognathia, and high, narrow palate, among others), and skeletal abnormalities (e. g. vertebral anomalies, wormian bones, short stature, and scoliosis). Multiple additional features may present, such as conductive hearing impairment, hypotonia, and connective tissue and urogenital abnormalities. Cognition is usually normal.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enLateral meningocele syndromeLehman syndrome
frSyndrome de méningocèle latéraleSyndrome de Lehman
deSyndrom der lateralen MeningozeleLehman-Syndrom
esSíndrome del meningocele lateralSíndrome de Lehman
itSindrome del meningocele lateraleSindrome di Lehman
nlLaterale meningocele-syndroomSyndroom van Lehman
ptSíndrome de meningocelo lateralSíndrome Lehman
plZespół bocznej przepukliny oponowejZespół Lehmana
csSyndrom laterální meningokélyLehmanův syndrom
ukСиндром латерального менінгоцелеСиндром Лемана
zh外侧脑膜膨出综合征Lehman综合征
trLateral meningosel sendromuLehman sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM130720Evalidated
ICD-10Q87.5NTBTattributedvalidated
ICD-11LA07.YNTBTindexvalidated
MONDO0007537Evalidated
MeSHC537878Evalidated
UMLSC1851710Evalidated
GARD9873Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
NOTCH3Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:7883ENSG0000007418160027619p13.12notch receptor 325394726[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families14 casesWorldwideCase(s)Validated23696373[PMID]_24311540[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

41 annotations · validated 2017-09-25
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000413Atresia of the external auditory canal
HP:0000405Conductive hearing impairment
HP:0000268Dolichocephaly
HP:0000494Downslanted palpebral fissures
HP:0100775Dural ectasia
HP:0002705High, narrow palate
HP:0000369Low-set ears
HP:0000272Malar flattening
HP:0002435Meningocele
HP:0000347Micrognathia
HP:0000275Narrow face
HP:0000358Posteriorly rotated ears
HP:0000508Ptosis
HP:0002645Wormian bones
Frequent (79-30%)
HP:0003312Abnormal form of the vertebral bodies
HP:0004452Abnormality of the middle ear ossicles
HP:0004493Craniofacial hyperostosis
HP:0000678Dental crowding
HP:0000023Inguinal hernia
HP:0001382Joint hypermobility
HP:0002162Low posterior hairline
HP:0000767Pectus excavatum
HP:0005487Prominent metopic ridge
HP:0002650Scoliosis
HP:0000470Short neck
HP:0000319Smooth philtrum
HP:0001537Umbilical hernia
Occasional (29-5%)
HP:0002308Chiari malformation
HP:0000028Cryptorchidism
HP:0000286Epicanthus
HP:0001263Global developmental delay
HP:0000218High palate
HP:0003307Hyperlordosis
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0000612Iris coloboma
HP:0002808Kyphosis
HP:0000520Proptosis
HP:0000407Sensorineural hearing impairment
HP:0003396Syringomyelia
HP:0001629Ventricular septal defect

Run the differential on the 12 obligate / very frequent terms

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Sources for this card