Benign vulvovaginal cysts

This article discusses the common benign cysts found in the vagina and vulva. While not commonly encountered in routine surgical pathology practice, these cysts are a relatively frequent occurrence. The cysts are often asymptomatic and do not come to clinical attention. Cysts of the vagina and vulva can be classified as embryologic or non-embryologic in origin, with müllerian and mesonephric cysts being the most common embryologic cysts. A discussion of the embryologic origin of the vagina and vulva is included as this knowledge can help in accurately characterizing cystic lesions found in this location. Non-embryologic cysts include endometriosis, inclusion cysts, and other rare lesions. These entities are discussed to allow distinction from cysts of embryologic origin. With accurate clinical history, anatomic site of origin, and identification of the epithelial lining, definitive classification of the cyst is possible.