Ovarian cancer is a type of malignancy that originates in the ovaries, which are the female reproductive glands responsible for producing eggs and hormones. It is often called the 'silent killer' due to its vague and nonspecific symptoms that can lead to late-stage diagnoses. There are several types of ovarian cancer, with epithelial tumors being the most common, accounting for approximately 90% of cases. Early detection is challenging, making awareness of risk factors and symptoms essential for timely intervention.

Several factors can increase the risk of developing ovarian cancer, including age, with most cases occurring in women over 50, and a family history of breast or ovarian cancer, especially with mutations in BRCA1 and BRCA2 genes. Other potential risk factors include specific reproductive history such as never having been pregnant, endometriosis, and obesity. Additionally, certain hormonal factors, such as hormone replacement therapy, may also contribute to the disease's development.

The symptoms of ovarian cancer are often subtle and easily overlooked, which contributes to its late presentation. Common symptoms include abdominal bloating or swelling, pelvic discomfort or pain, difficulty eating or feeling full quickly, and changes in bowel or urinary habits. Symptoms may often be mistaken for other conditions, emphasizing the need for women to consult healthcare providers when experiencing persistent or unusual changes in health.

Ovarian cancer can arise from a combination of genetic, environmental, and hormonal factors. Genetic mutations, particularly in the BRCA1 and BRCA2 genes, significantly increase the risk. Other factors include a family history of ovarian or breast cancer, age (most cases occur after age 50), and reproductive history such as irregular menstrual cycles or infertility. Additional potential causes may include endometriosis and exposure to certain hormones or chemicals.

Diagnosing ovarian cancer involves a combination of patient history, physical examination, and imaging studies such as ultrasound or CT scans. Blood tests, including the measurement of the CA-125 protein, can provide additional information, although elevated levels are not definitive for cancer. If ovarian cancer is suspected, a biopsy or surgical exploration may be required for a definitive diagnosis, allowing for an assessment of tumor type and stage.

Treatment for ovarian cancer typically involves a combination of surgery and chemotherapy. The primary approach often includes debulking surgery to remove the tumor and affected tissues, followed by chemotherapy to target any remaining cancer cells. In advanced cases, targeted therapy or immunotherapy may also be employed. The choice of treatment can vary based on the cancer stage, patient’s overall health, and personal preferences.

While not all cases of ovarian cancer can be prevented, certain lifestyle changes and medical interventions may reduce the risk. Maintaining a healthy weight, pursuing regular physical activity, and following a nutritious diet can contribute to overall reproductive health. For women with a strong familial history or genetic predispositions, prophylactic surgery (removal of ovaries and fallopian tubes) might be considered to significantly lower the risk of developing ovarian cancer.