Put simply, it is cancer of the vulva, the external portion of the female genital tract. The vulva includes the mons pubis (pubic mound), the inner and outer labia (lips), the clitoris, various glands, the opening of the urethra (where urine leaves the body), and the opening of the vagina. Most cases—around 90%—of vulvar cancer are classified as squamous cell carcinoma, a common form of.