The tumor may be any size and cancer is either (1) in the vulva only or in the vulva and perineum (area between the rectum and the vagina) and has spread to tissue under the skin and to nearby lymph nodes on one side of the groin; or (2) has spread to nearby tissues such as the lower part of the urethra and/or vagina or anus, and may have spread to nearby lymph nodes on one side of the groin.