raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:137583

Vulvar intraepithelial neoplasia

Synonyms: VIN · Vulvar intraepithelial tumor

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

A rare vulvovaginal tumor characterized by intraepithelial neoplastic proliferation of the vulvar epithelium, histologically presenting proliferation of atypical basal cells with basal layer involvement, enlarged nuclei, hyperchromasia, pleomorphic cells and increased numbers of mitotic figures. Patients are frequently asymptomatic, although vulvar pruritus/pain/burning, dysuria and/or dyspareunia may be associated. Concurrent anogenital involvement is frequent. Two subtypes, usual type VIN (uVIN) and differentiated type VIN (dVIN) exist, with uVIN typically being associated with HPV infection and presenting multifocal, elevated lesions around the introitus and/or labia majora, and dVIN being related to chronic inflammation and lesions consisting of poorly demarcated pink or white plaques that are often associated with lichen sclerosus or lichen planus. Diffusely positive p16 immunohistochemistry and high Ki-67 proliferation index in uVIN futher differentiates this subtype from dVIN, this latter being consistently negative for p16 while presenting p53 positivity.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enVulvar intraepithelial neoplasiaVIN · Vulvar intraepithelial tumor
frNéoplasie intraépithéliale de la vulveTumeur intraépithéliale de la vulve · VIN
deVulväre intraepitheliale NeoplasieVIN · Vulvärer intraepithelialer Tumor
esNeoplasia vulvar intraepitelialNVI · Tumor vulvar intraepitelial
itNeoplasia vulvare intraepitelialeTumore vulvare intraepiteliale · VIN
nlVulvaire intra-epitheliale neoplasieIntra-epitheliale neoplasie van vulva · VIN · Vulvaire intra-epitheliale tumor
ptNeoplasia vulvar intraepitelialTumor intraepitelial vulvar · VIN
plNowotwór wewnątrznabłonkowy sromuGuz śródnabłonkowy sromu · Śródnabłonkowa neoplazja sromu
csVulvární intraepiteliální neoplázieVulvární intraepiteliální nádor
ukВульварна інтраепітеліальна неоплазіяVIN · Вульварна інтраепітеліальна пухлина
zh外阴上皮内瘤变外阴上皮内肿瘤
trVulvar intraepitelyal neoplaziVIN · Vulvar intraepitelyal tümör

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10D07.1NTBTinclusionvalidated
ICD-112E67.12BTNTspecificvalidated
ICD-112E67.13BTNTspecificvalidated
ICD-11GA13.1BTNTspecificvalidated
MONDO0005198Evalidated
UMLSC0346210Evalidated

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

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence1-5 / 10 00020 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2008[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.

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HPO phenotypes

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

7

Sources for this card