Monarch Disease Ontology identifier MONDO_0005198 (vulvar intraepithelial neoplasia) can be described as follows. Intraepithelial neoplasia of the vulvar squamous epithelium. There is no evidence of invasion. This category includes vulvar high grade squamous intraepithelial lesion and vulvar intraepithelial neoplasia, differentiated type. Also known as: VIN, intraepithelial neoplasia of the vulva, intraepithelial neoplasia of vulva, squamous vulvar intraepithelial neoplasia, vulva intraepithelial neoplasia, vulval intraepithelial neoplasia, vulvar intraepithelial tumor, vulvar intraepithelial tumour.