raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:99967

Myxoid/round cell liposarcoma

Synonyms: MRCLS

Type
Histopathological subtype
Group
Subtype of disorder
Inheritance
Not applicable
Age of onset
Adult
Status
active

Myxoid/round cell liposarcoma (MRCLS) is a type of liposarcoma (LS) mostly located in the limbs, with a variable behavior depending on the histological subtype. Both myxoid and round cell are distinct histological subtypes of LS.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMyxoid/round cell liposarcomaMRCLS
frLiposarcome myxoïde/à cellules rondes= en
deLiposarkom, myxoides/rundzelliges= en
esLiposarcoma mixoide/de células redondas= en
itLiposarcoma mixoide/a cellule rotonde= en
nlMyxoïd/rondcellig liposarcoom= en
ptLipossarcoma mixóide
plTłuszczakomięsak śluzowaty/okrągłokomórkowy= en
csMyxoidní liposarkom= en
ukМіксоїдна/круглоклітинна ліпосаркома= en
zh黏液样/圆形细胞脂肪肉瘤= en
trMiksoid / yuvarlak hücreli liposarkom= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613488BTNTvalidated
ICD-10C49.9NTBTindexvalidated
MONDO0020561Evalidated
MeSHD018208Evalidated
UMLSC0206634Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DDIT3Part of a fusion gene inAssessedHGNC:2726ENSG0000017519712633712q13.3DNA damage inducible transcript 3
FUSPart of a fusion gene inAssessedHGNC:4010ENSG0000008928013707016p11.2FUS RNA binding protein
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Annual incidence1-9 / 1 000 0000.1 / 100 000EuropeValue and classValidated22517534[PMID]_[EXPERT]
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

3 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001482Subcutaneous nodule
Occasional (29-5%)
HP:0002027Abdominal pain
HP:0002579Gastrointestinal dysmotility

Run the differential on the 1 obligate / very frequent terms

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Sources for this card