Prognostic value of the number and laterality of metastatic inguinal lymph nodes in vulvar cancer: Revisiting the FIGO staging system

Our data suggest that the prognostic effect of bilateral LNs reflects the worse prognosis of multiple positive LNs. Regarding prognosis, LN involvement should be categorized into 2 groups-1-2 positive LNs and ≥3 positive LNs.