About Cancer Grading

By looking at the cells in the tissue and fluid under a microscope, a pathologist describes the cancer as Grade 1, 2, or 3. Grade 1 is most like ovarian tissue and less likely to spread; Grade 3 cells are more irregular and more likely to metastasize. However, many ovarian cancers are categorized simply as “low grade” or “high grade.” Chemotherapy is often not used to treat low grade Stage I cases.

SEER Stages and Survival 2019 Update

SEER Cancer Statistics Factsheets: Ovary Cancer. National Cancer Institute. Bethesda, MD

For more specific information about ovarian cancer, see the American Cancer Society’s Detailed Guide.