Ovarian cancer natural history, complications and prognosis
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Ovarian cancer is often diagnosed late resulting in a poor overall outcome for the patient.
Prognosis
Ovarian cancer has a poor prognosis. It is disproportionately deadly because symptoms are vague and non-specific, hence diagnosis is late. More than 60% of patients presenting with this cancer already have stage III or stage IV cancer, when it has already spread beyond the ovaries.
Ovarian cancers that are malignant shed cells into the naturally occurring fluid within the abdominal cavity. These cells can implant on other abdominal (peritoneal) structures included the uterus, urinary bladder, bowel, lining of the bowel wall (omentum) and can even spread to the lungs. These cells can begin forming new tumor growths before cancer is even suspected.
More than 50% of women with ovarian cancer are diagnosed in the advanced stages of the disease because no cost-effective screening test for ovarian cancer exists. The five year survival rate for all stages is only 35% to 38%. If, however, diagnosis is made early in the disease, five-year survival rates can reach 90% to 98%.
Germ cell tumors of the ovary have a much better prognosis than other ovarian cancers, in part because they tend to grow rapidly to a very large size, hence they are detected sooner.
Complications
- Spread of the cancer to other organs
- Progressive function loss of various organs
- Ascites (fluid in the abdomen)
- Intestinal obstruction