raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:66662

Extracutaneous mastocytoma

Type
Disease
Group
Disorder
Age of onset
All ages
Status
active

A rare neoplastic disease characterized by a localized, unifocal, low-grade tumor composed of mature mast cells, without evidence of systemic mastocytosis or skin lesions. The tumor most commonly arises in the lung and shows a non-destructive growth pattern.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enExtracutaneous mastocytoma
frMastocytome extra-cutané
deMastozytom, extrakutanes
esMastocitoma extracutáneo
itMastocitoma extracutaneo
nlExtracutaan mastocytoom
ptMastocitoma extra-cutâneo
plMastocytoza w narządach poza skórą
csMimokožní mastocytom
ukПозашкірна мастоцитома
zh皮肤外肥大细胞瘤
trEkstrakütanöz mastositoma

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10C96.2NTBTinclusionvalidated
ICD-112A21.3Especificvalidated
MONDO0019025Evalidated
UMLSC0272202Evalidated

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

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families7 casesWorldwideCase(s)Validated34233110[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated34233110[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.

7

Sources for this card