Revision 17 for 'Ovarian cancer (staging)'

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Ovarian cancer staging

The most commonly adopted staging staging system for ovarian cancer is the FIGO staging system.

It is as follows:

  • Stage I:  tumor limited to the ovaries.
    • Stage IA: tumor limited to one ovary; capsule intact, no tumor on ovarian surface; no malignant cells in ascites or peritoneal washings.
    • Stage IB: tumor limited to both ovaries; capsules intact, no tumor on ovarian surface; no malignant cells in ascites or peritoneal washings.
    • Stage IC: tumor limited to one or both ovaries , with any of the following: 
      • Stage IC1: surgical spill.
      • Stage IC2: capsule ruptured before surgery, or tumor on ovarian or fallopian tube surface.
      • Stage IC3: malignant cells in the ascites or peritoneal washings.
  • Stage II:  tumor involves one or both ovaries with pelvic extension (below pelvic brim).
    • Stage IIA: extension or implants on the uterus or fallopian tubes, no malignant ascites/negative peritoneal washings.
    • Stage IIB: extension to other pelvic intraperitoneal tissues.
  • Stage III:  tumor involves one or both ovaries with cytologically or histologically confirmed spread to the peritoneum outside the pelvis and/or metastasis to the retroperitoneal lymph nodes.
    • Stage IIIA: positive retroperitoneal lymph nodes and /or microscopic metastasis beyond the pelvis:
      • Stage IIIA1: positive (cytologically or histologically proven) retroperitoneal lymph nodes only
        • Stage IIIA1(i) : metastasis up to 10 mm in greatest dimension.
        • Stage IIIA1(ii) :metastasis more than 10 mm in greatest dimension.
      • Stage IIIA2 :microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes
    • Stage IIIB: involves macroscopic peritoneal metastasis beyond the pelvis up to 2 cm in greatest dimension, with or without metastasis to the retroperitoneal lymph nodes.
    • Stage IIIC: involves macroscopic peritoneal metastasis beyond the pelvis more than 2 cm in greatest dimension, with or without metastasis to the retroperitoneal lymph nodes. Stage IIIC includes extension of tumor to the capsule of liver and spleen without parenchymal involvement of either organ.
  • Stage IV: consists of distant metastasis, excluding peritoneal metastases, and includes the following:
    • Stage IVA: pleural effusion with positive cytology.
    • Stage IVB :parenchymal metastases and metastases to extra-abdominal organs (including inguinal lymph nodes and lymph nodes outside of the abdominal cavity).    

See also

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