NCIt definition : Stage IIA1 includes: T2a1, N0, M0. Tumor invades beyond uterus but no to pelvic wall
or to lower third of vagina. No parametrial invasion. T2a1: Clinically visible lesion
4.0 cm or less in greatest dimension. N0: No regional lymph node metastasis. M0: No
distant metastasis. (AJCC 7th ed.);