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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:  tumour limited to the ovaries
    • stage Ia: tumour limited to one ovary, no malignant ascites/negative peritoneal washings
    • stage Ib: tumour limited to both ovaries, no malignant ascites/negative peritoneal washings
    • stage Ic: stage Ia or Ib with malignant ascites/positive peritoneal washings
  • stage II:  tumour involves one or both ovaries with pelvic extension
    • stage IIa: extension or implants on the uterus or fallopian tubes, no malignant ascites/negative peritoneal washings
    • stage IIb: extension to other pelvic tissues, no malignant ascites/negative peritoneal washings
    • stage IIc: stage IIa or IIb with malignant ascites/positive peritoneal washings
  • stage III:  tumour involves one or both ovaries with peritoneal implants outside the pelvis or with retroperitoneal lymph node metastasis
    • stage IIIa:  microscopic peritoneal metastasis beyond the pelvis
    • stage IIIb: macroscopic peritoneal metastasis beyond the pelvis 2 cm or less
    • stage IIIc: peritoneal metastasis beyond the pelvis more than 2 cm or regional lymph node metastasis
  • stage IV: distant metastases including liver parenchyma

See also

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