Stage IIA includes: (T0, N1, M0); (T1, N1, M0); (T2, N0, M0). T0: No evidence of primary tumor. T1: Tumor 20 mm or less in greatest dimension. T1 includes T1mi. T1mi: Tumor 1 mm or less in greatest dimension. T2: Tumor more than 20 mm but not more than 50 mm in greatest dimension. N1: Metastasis to movable ipsilateral level I, II axillary lymph node(s). N0: No regional lymph node metastasis. M0: No clinical or radiographic evidence of distant metastasis. M0 includes M0(i+). (AJCC 6th and 7th Eds.) [from NCI]