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Ovarian Epithelial Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] - Stages of Ovarian Epithelial Cancer

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Pea, peanut, walnut, and lime show tumor sizes.

Stage III

In stage III, cancer is found in one or both ovaries and has spread outside the pelvis to other parts of the abdomen and/or nearby lymph nodes. Stage III is divided into stage IIIA, stage IIIB, and stage IIIC.

  • Stage IIIA: The tumor is found in the pelvis only, but cancer cells that can be seen only with a microscope have spread to the surface of the peritoneum (tissue that lines the abdominal wall and covers most of the organs in the abdomen), the small intestines, or the tissue that connects the small intestines to the wall of the abdomen.
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    Stage IIIA ovarian cancer. In stage IIIA, cancer is found in one or both ovaries and has spread to other tissue within the pelvis. Cancer cells that can only be seen with a microscope have spread to the surface of the peritoneum. Cancer that has spread to the surface of the liver is also considered to be stage III.
  • Stage IIIB: Cancer has spread to the peritoneum and the cancer in the peritoneum is 2 centimeters or smaller.
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    Stage IIIB ovarian cancer. In stage IIIB, cancer is found in one or both ovaries and has spread to other tissue within the abdomen and to the peritoneum, where it is 2 centimeters or smaller in diameter. Cancer that has spread to the surface of the liver is also considered to be stage III.
  • Stage IIIC: Cancer has spread to the peritoneum and the cancer in the peritoneum is larger than 2 centimeters and/or cancer has spread to lymph nodes in the abdomen.
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    Stage IIIC ovarian cancer. In stage IIIC, cancer is found in one or both ovaries and has spread to (a) the peritoneum, where it is larger than 2 centimeters in diameter, and/or (b) lymph nodes in the abdomen. Cancer that has spread to the surface of the liver is also considered to be stage III.

Cancer that has spread to the surface of the liver is also considered stage III ovarian cancer.

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