Cervical Cancer FIGO Staging Explained In Detail

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Cervical cancer FIGO staging helps to determine the disease prognosis and to select an appropriate treatment strategy. FIGO (International Federation of Gynecology and Obstetrics) is the most commonly used staging systems for cervical cancer.

STAGE I – The primary tumor has invaded into deeper cervical layer but is present only in the Uterus. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage Ia1 – The cancer cells are visible only under a microscope. Cervical stromal invasion </=3.0 mm in depth and horizontal epithelium invasion </=7.0 mm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage Ia2 – The cancer cells are visible only under a microscope. Cervical stromal invasion >3.0 mm but </=5.0 mm in depth and horizontal epithelium invasion </=7.0 mm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage Ib1 – The cancer cells are visible without a microscope and tumor size </=4.0 cm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage Ib2 – The cancer cells are visible without a microscope and tumor size >4.0 cm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

STAGE II – The cancer cells have invaded beyond the cervix and the uterus but haven’t spread to the pelvic wall or to the lower part of the vagina. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage IIa1 – The cancer cells have invaded beyond the cervix and the uterus but haven’t spread to the parametria and tumor size </=4.0 cm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage IIa2 – The cancer cells have invaded beyond the cervix and the uterus but haven’t spread to the parametria and tumor size >4.0 cm. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage IIb – The cancer cells have spread to the parametria. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

STAGE III – The cancer cells have spread to the pelvic wall or to the lower part of the vagina. It may block the ureter causing hydronephrosis. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage IIIa – The cancer cells have spread to the lower part of the vagina. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

Stage IIIb – The cancer cells have spread to the pelvic wall. It may have blockage the ureter causing hydronephrosis. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

STAGE IVA – The cancer cells have invaded beyond the pelvis wall into the bladder or the rectum. It might or might not have spread to nearby lymph nodes without any spread to distant body parts.

STAGE IVB – The cancer cells have spread to distant body parts such as distant lymph nodes, lungs, bones, or liver.

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