raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:370334

Extraskeletal Ewing sarcoma

Synonyms: EOE · Extraosseous Ewing sarcoma · Extraosseous Ewing tumor · Extraskeletal Ewing tumor

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
Adolescent, Adult, Childhood
Status
active

Extraskeletal Ewing sarcoma is a rare, poorly differentiated, highly malignant, soft tissue tumor, derived from neuroectoderm, that is morphologically indistinguishable from skeletal Ewing sarcoma but is located in extraosseous locations, with the most common being: chest wall, paravertebral region, abdominopelvic area (with predilection for the retroperitoneal space), gluteal region and lower extremities. Clinical presentation is highly variable and depends on tumor localization. Local recurrence is common and metastatic disease most frequently involves the bones and lungs.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enExtraskeletal Ewing sarcomaEOE · Extraosseous Ewing sarcoma · Extraosseous Ewing tumor · Extraskeletal Ewing tumor
frSarcome d'Ewing extrasquelettiqueEOE · Sarcome d'Ewing extraosseux
deExtraskelettales Ewing-SarkomEOE · Extraossäres Ewing-Sarkom · Extraskelettaler Ewing-Tumor
esSarcoma de Ewing extraesqueléticoSarcoma de Ewing extraóseo · Tumor de Ewing extraesquelético · Tumor de Ewing extraóseo
itSarcoma extra-scheletrico di EwingEOE · Sarcoma extra-osseo di Ewing · Tumore extra-osseo di Ewing · Tumore extra-scheletrico di Ewing
nlExtraskeletaal Ewing-sarcoomEOE · Extraossaal Ewing-sarcoom · Extraossale Ewing-tumor · Extraskeletale Ewing-tumor
ptSarcoma de Ewing extra-esquelético
plPozaszkieletowy mięsak EwingaEOE · Pozakostny guz Ewinga · Pozakostny mięsak Ewinga · Pozaszkieletowy guz Ewinga
csExtraoseální Ewingův sarkomEOE · Extraoseální Ewingův nádor
ukПозаскелетна саркома ЮінгаEOE · Позакісткова саркома Юінга · Позакісткова пухлина Юінга · Екстраскелетна пухлина Юінга
zh骨外尤因肉瘤骨外尤因肉瘤
trEkstraskeletal Ewing sarkomuEOE · Ekstraosseöz Ewing tümörü · Ekstraskeletal Ewing tümörü · Ekstraosseöz Ewing sarkomu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM612219NTBTvalidated
ICD-10C49.9NTBTattributedvalidated
ICD-112B52.YNTBTindexvalidated
MONDO0018270Evalidated
UMLSC0279980Evalidated
MedDRA10015759Evalidated

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

4 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ERGPart of a fusion gene inAssessedHGNC:3446ENSG0000015755416508021q22.2ETS transcription factor ERG11823984[PMID]
EWSR1Part of a fusion gene inAssessedHGNC:3508ENSG0000018294413345022q12.2EWS RNA binding protein 121113140[PMID]
FLI1Part of a fusion gene inAssessedHGNC:3749ENSG0000015170219306711q24.3Fli-1 proto-oncogene, ETS transcription factor9072004[PMID]_18769338[PMID]_16517542[PMID]_11570916[PMID]
SMARCA5Part of a fusion gene inAssessedHGNC:11101ENSG000001531476033754q31.21SNF2 related chromatin remodeling ATPase 521113140[PMID]
5

Prevalence and incidence

22 records
TypeClassValueAreaQualificationValidationSource
Annual incidence<1 / 1 000 0000.077 / 100 000AustriaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.056 / 100 000BelgiumValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.01 / 100 000BulgariaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.023 / 100 000CroatiaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.052 / 100 000Czech RepublicValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.083 / 100 000EstoniaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.071 / 100 000GermanyValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.055 / 100 000IrelandValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.068 / 100 000ItalyValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.043 / 100 000LatviaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.05 / 100 000LithuaniaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.076 / 100 000NorwayValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.018 / 100 000PolandValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.092 / 100 000PortugalValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.081 / 100 000SloveniaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.087 / 100 000SpainValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.056 / 100 000SwitzerlandValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.089 / 100 000NetherlandsValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence<1 / 1 000 0000.058 / 100 000United KingdomValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence1-9 / 1 000 0000.112 / 100 000FinlandValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence1-9 / 1 000 0000.126 / 100 000MaltaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]
Annual incidence1-9 / 1 000 0000.106 / 100 000SlovakiaValue and classValidatedRARECARE surveillance of rare cancers in Europe[OTHER]

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

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

7

Sources for this card