Carcinoma confined to cervix (ignore extension to uterine corpus)

IA: Invasive carcinoma diagnosed only by microscope, with maximum depth of invasion &lt; 5 mm• IA1: Stromal invasion &lt; 3 mm• IA2: Stromal invasion &gt; 3 mm• IB: Invasive carcinoma with deepest invasion ≥ 5 mm, but still limited to cervix• IB1: Invasion ≥ 5 mm but &lt; 2 cm• IB2: Invasion ≥ 2 cm but &lt; 4 cm• IB3: Invasion ≥ 4 cm

Carcinoma beyond uterus, without extension to lower third of vagina or to pelvic wall

IIA: Limited to upper two-thirds of vagina, without parametrial involvement• IIA1: Invasion &lt; 4 cm• IIA2: Invasion ≥ 4 cm• IIB: Parametrial involvement without extension to pelvic wall

Carcinoma involves lower third of vagina, extends to pelvic wall, causes hydronephrosis or nonfunctioning kidney, or involves pelvic/para-aortic lymph nodes

IIIA: Involves lower third of vagina, no extension to pelvic wall• IIIB: Extension to pelvic wall and/or hydronephrosis or non-functioning kidney• IIIC: Lymph node involvement (pelvic and/or para-aortic), regardless of tumor size or extent• IIIC1: Pelvic lymph node metastasis only• IIIC2: Para-aortic lymph node metastasis

Carcinoma beyond the true pelvis or involving mucosa of bladder or rectum

IVA: Spread to adjacent pelvic organs• IVB: Spread to distant organs

Table