Stage II includes: IIA (T3, N0, M0); IIB (T1, N1, M0); (T2, N1, M0); (T3, N1, M0). T1: Tumor limited to the pancreas 2 cm or less in greatest dimension. T2: Tumor limited to the pancreas, more than 2 cm in greatest dimension. T3: Tumor extends beyond the pancreas but without involvement of the celiac axis or the superior mesenteric artery. N0: No regional lymph node metastasis. N1: Regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th Eds.) [from NCI]