Selective Inguinal Lymphadenectomy in the Treatment of Invasive Squamous Cell Carcinoma of the Vulva
Table 1
FIGO staging of invasive cancer of the vulva.
Stage I
Tumor confined to the vulva
IA
Lesions ≤2 cm in size confined to the vulva or perineum and with stromal invasion ≤1.0 mm*, no nodal metastasis
IB
Lesions >2 cm in size confined to the vulva or perineum with stromal invasion greater than 1.0 mm*, no nodal metastasis
Stage II
Tumor of any size with extension to adjacent perineal structures (1/3 lower urethra, 1/3 lower vagina, anus), no nodal metastasis
Stage III
Tumor of any size with or without extension to adjacent perineal structures (1/3 lower urethra, 1/3 lower vagina, anus) with positive inguinofemoral lymph nodes
IIIA
With 1 lymph node metastasis (≥5 mm),
IIIB
(i) With 2 or more lymph node metastases (≥5 mm), (ii) 3 or more lymph node metastases (<5 mm)
IIIC
With positive nodes with extracapsular spread
Stage IV
Tumor invades other regional (2/3 upper urethra, 2/3 upper vagina) or distant structures
IVA
Tumor invades any of the following: (i) Upper urethra and/or vaginal mucosa, bladder mucosa, rectal mucosa, or fixed to pelvic bone, (ii) Fixed or ulcerated inguinofemoral lymph nodes
IVB
Any distant metastasis including pelvic lymph nodes
*The depth of invasion is defined as the measurement of the tumor from the epithelial-stromal junction of the adjacent most superficial dermal papilla to the deepest point of invasion.