NCIt definition : Stage II includes: IIA (T1, N0, M0, G3, G4); IIB (T2, N0, M0, G3, G4). T1: Tumor 8
cm or less in greatest dimension. T2: Tumor more than 8 cm in greatest dimension.
N0: No regional lymph node metastasis. M0: No distant metastasis. G3: Poorly differentiated.
G4: Undifferentiated. (AJCC 7th ed.);