HEALTH TOPICS 
Ovarian Cancer
What Is It?
Ovarian cancer is the uncontrolled growth of abnormal cells in the ovaries. Ovaries are the female reproductive organs that produce eggs. They also make the hormone estrogen. Ovarian cancer cells can form in three areas:
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on an ovary's surface
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in an ovary's egg-producing cells
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in tissues within an ovary.
Tumors on the surface of an ovary are the most common.
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