The most commonly used screening method for ovarian cancer is the B-ultrasound examination of the adnexa uteri. The B-ultrasound can detect ovarian masses and tumors, and when these are found, the possibility of ovarian cancer should be considered, necessitating further examinations for confirmation. Another method involves the tumor marker CA125, which is relatively sensitive and specific for epithelial ovarian cancer. Therefore, for ovarian cancer screening, we can perform a blood test for CA125 in conjunction with a B-ultrasound of the adnexa uteri.