**4. Screening population**

There are two populations of women who are at risk of developing ovarian cancer—the general population whose life time risk is around 1–2% and the high-risk population (strong family history/gene mutations) whose risk can range from 10 to 46%. Most of the ovarian cancers are sporadic of which 90% occur in postmenopausal women, and for this reason, screening trials in the general population have been aimed at this cohort. In the high-risk population, however, even premenopausal women are at increased risk and are therefore included in screening studies.
