Ovarian cysts are fluid-filled sacs that develop in or on the ovary. Ovarian cysts occur commonly in women of all ages. Some women with ovarian cysts have pain or pelvic pressure, while others have no symptoms. Irregular menstrual periods are not usually related to an ovarian cyst.
Fortunately, most ovarian cysts do not require surgical removal and are not caused by cancer. Cysts can vary in size from less than one centimeter (one-half inch) to greater than 10 centimeters (4 inches).
This topic discusses the various causes of ovarian cysts, how ovarian cysts are diagnosed, and what follow up testing and/or treatment might be recommended.