Ovarian cancer is a type of cancer that begins in the ovaries. The ovaries are each about the size of an almond. They produce eggs, called ova, as well as the hormones estrogen and progesterone.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Your gift can go twice as far to advance cancer research and care!