Stage IIIA includes: (T1/T2, N1a/N1b, M0); T1: Invasive vulvar cancer confined to the vulva or perineum. T2: Vulvar cancer with tumor of any size with extension to adjacent perineal structures (lower/distal 1/3 urethra, lower/distal 1/3 vagina, anal involvement). N1a: Vulvar cancer with one or two lymph node metastasis each measuring 5 mm or less. N1b: Vulvar cancer with one lymph node metastasis measuring 5 mm or greater. M0: No distant metastasis. (AJCC 7th ed.) [from
NCI]