Vulvar cancer is a rare cancer. An estimated 5900 women in the United States will be diagnosed with vulvar cancer every year.
Vulvar cancer usually grows slowly over years. Most of the cancers are squamous cell carcinoma, and begin in cells found around or on the vaginal lips. These types of cancers often looks like a wart. Adenocarcinoma of the vulvar is less common, and makes up about 8% of vulvar cancer. They usually start in the Bartholin glands or sweat glands in the vulvar. These cells can be found on the sides of the vaginal opening. Other rare types of vulvar cancer include melanoma and sarcoma.