What is Ovarian Cancer?
Ovarian cancer is a solid tumor cancer that originates in the ovary(ies) or fallopian tube(s). It develops when DNA mutations tell the cells to multiply rapidly, creating a tumor. There are three types of ovarian cancer tumors.
- Epithelial tumors – form in the thin layer of tissue on the outside of the ovary. These tumors make up approximately 90% of ovarian cancer cases.
- Stromal tumors – form in the tissue that contains hormone-producing cells. These tumors make up approximately 7% of ovarian cancer cases.
- Germ cell tumors – form in the egg-producing cells of the ovary. These tumors are rare and generally occur in younger women.