Normal histology and nomenclature of the vulva, and malignant neoplasms, including VIN.

In this article, vulvar anatomy and histology are reviewed, and nonneoplastic and neoplastic epithelial disorders are presented. Included are lichen sclerosus, squamous cell hyperplasia, vulvar intraepithelial neoplasia, vulvar Paget's disease, and squamous cell carcinoma. Current terminology, tumor measurements, and staging for vulvar carcinoma are reviewed.