Due in part to the fact that there is no screening examination for early detection, ovarian cancer is the most malignant tumour of the female reproductive organs.
A diagnosis of ovarian cancer is confirmed through a biopsy of tissue, usually removed during surgery. Screening is not recommended in women who are at average risk, as evidence does not support a reduction in death and the high rate of false positive tests may lead to unneeded surgery, which is accompanied by its own risks. If caught and treated in an early stage, ovarian cancer is often curable. In the United States, uterine cancer is the most commonly diagnosed invasive cancer of the female reproductive system. The number of women diagnosed with uterine cancer has been steadily increasing, with 35,040 women diagnosed in 1999 and 56,808 diagnosed in 2016. Adjuvant chemotherapy has been found to improve survival and reduce the risk of ovarian cancer recurring compared to no adjuvant therapy in women with early stage epithelial ovarian cancer. 
