Stage IIB includes: (T1, N1, M0, Any G); (T3, N0, M0, Any G). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No distant metastasis. (AJCC 8th ed.) [from NCI]