Ovarian Cancer Stages:Ovarian cancer staging is by the FIGO staging system and uses information obtained after surgery, which can include a total abdominal hysterectomy, removal of (usually) both ovaries and fallopian tubes, (usually) the omentum, and pelvic (peritoneal) washings for cytology. The AJCC stage is the same as the FIGO stage.To plan the best treatment, your doctor needs to know the grade of the tumor the extent (stage) of the disease. The stage is based on whether the tumor has invaded nearby tissues, whether the cancer has spread, and if so, to what parts of the body.These are the stages of ovarian cancer:
Ovarian Cancer Stage I: Cancer cells are found in one or both ovaries. Cancer cells may be found on the surface of the ovaries or in fluid collected from the abdomen.limited to one or both ovaries

• Stage IA - involves one ovary; capsule intact; no tumor on ovarian surface; no malignant cells in ascites or peritoneal washings
• Stage IB - involves both ovaries; capsule intact; no tumor on ovarian surface; negative washings
• Stage IC - tumor limited to ovaries with any of the following: capsule ruptured, tumor on ovarian surface, positive washings

Ovarian Cancer Stage II: Cancer cells have spread from one or both ovaries to other tissues in the pelvis. Cancer cells are found on the fallopian tubes, the uterus, or other tissues in the pelvis. Cancer cells may be found in fluid collected from the abdomen.
pelvic extension or implants

• Stage IIA - extension or implants onto uterus or fallopian tube; negative washings
• Stage IIB - extension or implants onto other pelvic structures; negative washings
• Stage IIC - pelvic extension or implants with positive peritoneal washings

Ovarian Cancer Stage III: Cancer cells have spread to tissues outside the pelvis or to the regional lymph nodes. Cancer cells may be found on the outside of the liver.
microscopic peritoneal implants outside of the pelvis; or limited to the pelvis with extension to the small bowel or omentum

• Stage IIIA - microscopic peritoneal metastases beyond pelvis
• Stage IIIB - macroscopic peritoneal metastases beyond pelvis less than 2 cm in size
• Stage IIIC - peritoneal metastases beyond pelvis > 2 cm or lymph node metastases

Ovarian Cancer Stage IV: Cancer cells have spread to tissues outside the abdomen and pelvis. Cancer cells may be found inside the liver, in the lungs, or in other organs.distant metastases to the liver or outside the peritoneal cavity

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