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:
on an ovary's surface
in an ovary's egg-producing cells
in tissues within an ovary.
Tumors on the surface of an ovary are the most common.
Ovarian cancer often does not cause any symptoms until it has spread beyond the ovary. Doctors have a hard time detecting the disease during a pelvic exam before this late stage. That's why ovarian cancer leads to more deaths than any other cancer of the female reproductive system.