raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79105

Myxofibrosarcoma

Synonyms: Fibromyxosarcoma · Myxoid malignant fibrous histiocytoma

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

A rare soft tissue sarcoma characterized by a malignant, fibroblastic lesion with variably myxoid stroma, pleomorphism, and a distinctively curvilinear vascular pattern. The majority of tumors arise in the limbs including the limb girdles, more often in dermal/subcutaneous tissues than in the underlying fascia and skeletal muscle, and usually present as a slowly growing, painless mass. Depth of the lesion and tumor grade do not influence the high rate of local recurrence, while the percentage of metastasis and tumor-associated mortality are much higher in deep-seated and high-grade neoplasms.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMyxofibrosarcomaFibromyxosarcoma · Myxoid malignant fibrous histiocytoma
frMyxofibrosarcomeFibrohistiocytome myxoïde malin · Fibromyxosarcome
deMyxofibrosarkomFibromyxosarkom · Histiozytom, fibröses malignes myxoides
esMixofibrosarcomaHistiocitoma fibroso maligno tipo mixoide
itMixofibrosarcomaIstiocitoma fibroso maligno mixoide
nlMyxofibrosarcoomFibromyxosarcoom · Mixoïd maligne fibreus histiocytoom
ptMixofibrosarcomaHistiocitoma fibroso mixóide maligno
plŚluzakowłókniakomięsakŚluzakowata złośliwa włóknista histiocytoma · Włókniakośluzakomięsak
csMyxofibrosarkomFibromyxosarkom · Myxoidní maligní fibrózní histiocytom
ukМіксофібросаркомаФіброміксосаркома · Міксоїдна злоякісна фіброзна гістіоцитома
zh粘液样纤维肉瘤黏液样恶性纤维组织细胞瘤
trMiksofibromasarkomFibromiksosarkom · Miksoid habis fibröz histiyositoma

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C49.9NTBTattributedvalidated
ICD-112B53.0Especificvalidated
MONDO0019202Evalidated
UMLSC3714524Evalidated
MedDRA10066948Evalidated

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

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CREB3L1Part of a fusion gene inAssessedHGNC:18856ENSG0000015761361621511p11.2cAMP responsive element binding protein 3 like 1
CREB3L2Part of a fusion gene inAssessedHGNC:23720ENSG000001821586088347q33cAMP responsive element binding protein 3 like 2
FUSPart of a fusion gene inAssessedHGNC:4010ENSG0000008928013707016p11.2FUS RNA binding protein
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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