Stage IIB includes: (T2a, N0, M0, G2); (T2b, N0, M0, G2). T2a: Superficial tumor more than 5 cm in greatest dimension. T2b: Deep tumor more than 5 cm in greatest dimension. N0: No regional lymph node metastasis. M0: No distant metastasis. G2: Grade 2. (AJCC 7th ed.) [from
NCI]