|Stages of Ovarian Cancer|
The risk of ovarian cancer increases in women who have ovulated more over their lifetime. This includes those who have never had children, those who begin ovulation at a younger age or reach menopause at an older age. Other risk factors include hormone therapy after menopause, fertility medication, and obesity.
Factors that decrease risk include hormonal birth control, tubal ligation, and breast feeding. About 10% of cases are related to inherited genetic risk; women with mutations in the genes BRCA1 or BRCA2 have about a 50% chance of developing the disease. The most common type of ovarian cancer, comprising more than 95% of cases, is ovarian carcinoma. There are five main subtypes of ovarian carcinoma, of which high-grade serous carcinoma is the most common. These tumors are believed to start in the cells covering the ovaries, though some may form at the Fallopian tubes. Less common types of ovarian cancer include germ cell tumors and sex cord stromal tumors A diagnosis of ovarian cancer is confirmed through a biopsy of tissue, usually removed during surgery.
Stages of ovarian cancer
Ovarian cancer is classified in chronological stages I through IV. Each stage can then be further classified into sub-categories. Should you be diagnosed with ovarian cancer, your doctor will be your best resource when it comes to understanding the full categorization and classification of your cancer.
The following chart provides an overview of the four basic stages of ovarian cancer:
Stage I. Ovarian cancer is confined to one or both ovaries.
Stage II. Ovarian cancer has spread to other locations in the pelvis, such as the uterus or fallopian tubes.
Stage III. Ovarian cancer has spread to the lining of the abdomen (peritoneum) or to the lymph nodes within the abdomen. This is the most common stage of disease identified at the time of diagnosis.
Stage IV. Ovarian cancer has spread to organs beyond the abdomen.