Ovarian cancer is discovered through transvaginal ultrasound of the adnexa uteri revealing ovarian tumors, or through imaging studies such as abdominal CT scans or MRIs showing ovarian tumors, combined with tumor markers, particularly the ovarian epithelial cancer tumor marker CA125, which will be significantly elevated. Generally, with these findings, ovarian cancer can typically be clinically diagnosed. Confirmation, however, requires pathological diagnosis, which involves obtaining a biopsy of the tumor. This can be done through a puncture biopsy or through pathological examination after surgical excision to confirm ovarian cancer. Additionally, some patients with ovarian cancer present with substantial ascites at the time of discovery. If cancer cells are found in the abdominal fluid, combined with a significant increase in CA125 and imaging studies showing ovarian tumors, ovarian cancer can also be diagnosed.