Stage II includes: IIA: (T2, N0, M0); (T3, N0, M0) and IIB: (TI, NI, M0); (T2, NI, M0). TI: Tumor invades lamina propria or submucosa. T2: Tumor invades muscularis propria. T3: Tumor invades adventitia. N0: No regional lymph node metastasis. N1: Regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th ed.) -2003 [from
NCI]