raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:370396

Small cell carcinoma of the ovary

Synonyms: SCCO · Small cell ovarian carcinoma

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

Small cell carcinoma of the ovary is a rare, highly aggressive, poorly differentiated ovarian neoplasm, often associated with paraneoplastic hypercalcemia. It is usually diagnosed in childhood or young adulthood at an advanced stage and presents with abdominal or pelvic mass or, rarely, symptoms related to hypercalcemia. Occasional familial cases have been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSmall cell carcinoma of the ovarySCCO · Small cell ovarian carcinoma
frCarcinome à petites cellules de l'ovaireCarcinome ovarien à petites cellules · SCCO
deOvarialkarzinom, kleinzelliges
esCarcinoma de células pequeñas del ovarioCarcinoma ovárico de células pequeñas · SCCO
itCarcinoma dell'ovaio a piccole celluleCarcinoma ovarico a piccolo cellule · SCCO
nlKleincellig carcinoom van ovariumKleincellig carcinoom van eierstok · Kleincellig ovarieel carcinoom · SCCO
ptCarcinoma de pequenas células do ovário
plDrobnokomórkowy rak jajnikaSCCO
csMalobuněčný karcinom ovariaSCCO
ukДрібноклітинна карцинома яєчникаSCCO · Дрібноклітинна карцинома яєчників
zh卵巢小细胞癌小细胞卵巢癌
trOverin küçük hücreli karsinomuSCCO · Küçük hücreli over karsinomu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C56NTBTattributedvalidated
ICD-112C73.0YNTBTattributedvalidated
MONDO0003795Evalidated
UMLSC2212006Evalidated
GARD10411Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SMARCA4Disease-causing germline mutation(s) inAssessedHGNC:11100ENSG0000012761660325419p13.2SWI/SNF related BAF chromatin remodeling complex subunit ATPase 424658002[PMID]_24658004[PMID]_24658001[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families300 casesWorldwideCase(s)Validated29731803[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated29731803[PMID]_ORPHANET

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.

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Sources for this card