raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:656417

Embryonal tumor with multilayered rosettes

Synonyms: ETMR

Type
Disease
Group
Disorder
Inheritance
Multigenic/multifactorial
Status
active

A rare central nervous system embryonal tumor characterized by embryonal cells arranged in multilayered rosettes and displaying one of three morphological patterns: embryonal tumor with abundant neuropil and true rosettes, ependymoblastoma, or medulloepithelioma. The tumors typically have a C19MC alteration or (rarely) a <i>DICER1</i> mutation and correspond to WHO grade IV. They are mostly localized intracranially, rarely in the spinal cord, and commonly cause signs and symptoms of elevated intracranial pressure, sometimes seizures and focal neurological signs. Most cases occur in children during the first two years of life.

1

Names in Orphadata languages

10 of 12 languages
LangNameSynonyms
enEmbryonal tumor with multilayered rosettesETMR
frTumeur embryonnaire avec rosettes pluristratifiéesETMR · Tumeur embryonnaire avec rosettes multicouches
deEmbryonaler Tumor mit mehrschichtigen Rosetten= en
esTumor embrionario con rosetas de capas múltiples= en
itTumore embrionale con rosette multistratoTERM
nlEmbryonale tumor met meerlagige rozetten= en
ptTumor embrionário com rosetas multicamadas= en
plGuz zarodkowy z wielowarstwowymi rozetami= en
csEmbryonální tumor s vícevrstevnatými rozetami= en
ukЕмбріональна пухлина з багатошаровими розеткамиЕТМР

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C71.9NTBTattributedvalidated
ICD-11XH0KZ2Especificvalidated
MONDO0958119Evalidated
MONDO958119Evalidated
UMLSC5575350Evalidated

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

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

Codes that Orphanet moved or referred to this one:

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.

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Sources for this card