Stage IIIC includes: (T3, N1, M0); (T4, N1, M0). T3: Tumor larger than 5 cm. T4: Tumor of any size invading adjacent organ(s), such as the vagina, urethra, or bladder. N1: Metastasis in inguinal, mesorectal, internal iliac, or external iliac nodes. M0: No distant metastasis. (AJCC 8th ed.) [from NCI]