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Ovarian cancer is a cancerous (malignant) tumor on one or both ovaries. A tumor is a mass of cells or tissue. The ovaries are the parts of the female reproductive system that produce eggs and female hormones (estrogen and progesterone). Women have two ovaries. They are located on each side of the uterus.
The exact cause of ovarian cancer is not known.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
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