Table 2: Risk of lymph node involvement and 5-year progression free survival based on depth of invasion and grade.

Depth of invasion Grade Risk of LN involvement 5-year PFS Superficial (IA) 1 or 2 <3% >95% Superficial (IA) 3 ~10% ~80% Less than 50% (IB) 1 or 2 Greater than 50% (1C) 1 or 2 Greater than 50% (1C) 3 ~30% ~50% Cervical involvement (II) any grade