Vulvar Atypical Nevus

**Semantic type:** Neoplastic Process

**Definition:** A small, well circumscribed melanocytic neoplasm that arises from the vulva and affects women in their reproductive years. It is characterized by the presence of junctional nests of melanocytes. Some of the superficial melanocytes show atypia. During pregnancy the atypical melanocytic changes may appear more prominent. This neoplasm is not associated with the presence of dysplastic nevi in other anatomic areas.

**Synonyms:** - AMNGT - Atypical Melanocytic Nevus of Genital Type - Atypical Melanocytic Nevus of the Genital Type - Atypical Melanocytic Nevus, Genital Type - Atypical Vulvar Nevus