Stage IIIA includes: T0-2, N1, M0. T0: No evidence of primary tumor. T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.) [from NCI]