Vaginal cancer is a rare type of cancer that forms in a woman's vagina, sometimes called the birth canal. The vagina leads from the cervix, which is the opening of the uterus, to the outside of her body. This outside portion is called the vulva. Most vaginal cancers are called secondary vaginal cancer because they actually have formed somewhere else like the cervix, uterus or vulva, and have spread to the vagina. In very rare cases, the cancer can form in the vagina without having spread from another location. If this is the case, then the cancer is called the primary vaginal cancer. It accounts for one to 2% of cancers in the female genital tract and occurs mainly in older women. The average time of diagnosis or age of diagnosis is 67.