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OVARIAN AND PRIMARY PERITONEAL CANCER STAGING

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  • Stage I - limited to one or both ovaries
    • IA - involves one ovary; capsule intact; no tumor on ovarian surface; no malignant cells in ascites or peritoneal washings
    • IB - involves both ovaries; capsule intact; no tumor on ovarian surface; negative washings
    • IC - tumor limited to ovaries with any of the following: capsule ruptured, tumor on ovarian surface, positive washings
  • Stage II - pelvic extension or implants
    • IIA - extension or implants onto uterus or fallopian tube; negative washings
    • IIB - extension or implants onto other pelvic structures; negative washings
    • IIC - pelvic extension or implants with positive peritoneal washings
  • Stage III - microscopic peritoneal implants outside of the pelvis; or limited to the pelvis with extension to the small bowel or omentum
    • IIIA - microscopic peritoneal metastases beyond pelvis
    • IIIB - macroscopic peritoneal metastases beyond pelvis less than 2 cm in size
    • IIIC - peritoneal metastases beyond pelvis > 2 cm or lymph node metastases (retroperitoneal or inguinal)
  • Stage IV - distant metastases to the liver or outside the peritoneal cavity
  • Note: Liver capsule metastasis T3/Stage III; liver parenchymal metastasis M1/Stage IV.
    Pleural effusion must have positive cytology for M1/Stage IV.

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