Sub-stage (choose the option matching the findings)
IA1 — invasive carcinoma diagnosed by microscopy only, stromal invasion < 3 mm
IA2 — microscopy only, stromal invasion ≥ 3 mm and < 5 mm
IB1 — measured invasion ≥ 5 mm, lesion < 2 cm, confined to the cervix
IB2 — lesion ≥ 2 cm and < 4 cm, confined to the cervix
IB3 — lesion ≥ 4 cm, confined to the cervix
IIA1 — upper two-thirds of the vagina, no parametrial involvement, lesion < 4 cm
IIA2 — upper two-thirds of the vagina, no parametrial involvement, lesion ≥ 4 cm
IIB — parametrial involvement not reaching the pelvic wall
IIIA — lower third of the vagina, no extension to the pelvic wall
IIIB — extension to the pelvic wall and/or hydronephrosis or a non-functioning kidney
IIIC1 — pelvic lymph node metastasis (record r for imaging, p for pathology)
IIIC2 — para-aortic lymph node metastasis (record r or p)
IVA — spread to adjacent pelvic organs (biopsy-proven bladder or rectal mucosa)
IVB — spread to distant organs
Evidence
Original publication
Bhatla N, Berek JS, Cuello Fredes M, et al. Revised FIGO staging for carcinoma of the cervix uteri (2018, with 2019 corrigendum). Allows imaging and pathology for staging, subdivides stage IB by tumour size (IB1 < 2 cm, IB2 2–< 4 cm, IB3 ≥ 4 cm), and adds stage IIIC for pelvic (IIIC1) or para-aortic (IIIC2) nodal disease.
International Journal of Gynaecology and Obstetrics, 2019
Guideline
Bhatla N, Aoki D, Sharma DN, Sankaranarayanan R. Cancer of the cervix uteri (FIGO Cancer Report 2018). The stage IIIC assignment should record the method (imaging "r" or pathology "p"). Verify sub-stage definitions against the primary FIGO publication before clinical use.
International Journal of Gynaecology and Obstetrics, 2018
Last reviewed: 2026-09
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