Stage IIIC includes: (T1/T2, N2c, 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). N2c: Vulvar cancer with lymph node metastasis with extracapsular spread. M0: No distant metastasis. (AJCC 7th ed.) [from NCI]