Stage IIIA includes: (T1, N1, M0); (T2, N1, M0). T1: Tumor 2 cm or smaller. T2: Tumor larger than 2 cm but equal to or smaller than 5 cm. N1: Metastasis in inguinal, mesorectal, internal iliac, or external iliac nodes. M0: No distant metastasis. (AJCC 8th ed.) [from NCI]