Ovarian cancer can generally be detected through a transvaginal ultrasound. During this procedure, we can find cystic or cystic-solid, or a solid mass in the ovaries. If a blood test for tumor markers shows a significant increase in CA125, especially in combination with a large amount of ascites, we must strongly suspect ovarian cancer. In such cases, patients should undergo a tumor biopsy. By taking a biopsy and confirming it pathologically, we can definitively diagnose ovarian cancer. Therefore, most ovarian cancer patients can indeed be detected through a transvaginal ultrasound.