Ovarian Cancer, from the CureRays guide library.

Ovarian cancer starts in the ovaries or nearby tissue; surgery and chemotherapy lead treatment, with newer targeted drugs and selective radiation helping control disease and relieve symptoms.

What it is.

The ovaries are two small organs that store a woman's eggs and make hormones. Ovarian cancer most often begins in the surface (epithelial) cells of the ovary or the nearby fallopian tube and lining of the abdomen. Because the ovaries sit deep in the pelvis, early symptoms — bloating, feeling full quickly, pelvic discomfort, urinary changes — are vague and easy to overlook, so it is frequently found after it has spread within the abdomen. The good news is that even advanced ovarian cancer responds to treatment, and surgery plus chemotherapy, increasingly guided by genetic testing, controls the disease for many women, often for years.

How radiation treats it.

Radiation uses focused high-energy x-rays to damage the DNA inside cancer cells so they can no longer divide, while healthy tissue recovers more readily. In ovarian cancer, radiation is used in a focused way — pinpointing a specific area of recurrence or relieving a troublesome symptom — using advanced imaging to protect the bowel, bladder, and other organs. Treatments are painless and brief. Side effects depend on the area treated and may include temporary fatigue or bowel and bladder changes, which are managed and usually settle after treatment.

The ways we can treat it.

Stereotactic / focused radiation (SBRT/SRS). Delivers precise high-dose treatment to an isolated area of recurrence (oligometastatic disease), such as a single lymph node or spot, to control it without affecting the whole body.

Palliative external-beam radiation. A few targeted treatments relieve symptoms — easing pelvic pain, controlling bleeding, or shrinking a mass pressing on the bowel or bladder.

Whole-pelvis radiation (selected cases). Occasionally used to control disease confined to the pelvis when other options are exhausted, shaped to spare the bowel and bladder.

Questions we hear often.

Is there a screening test for ovarian cancer? No reliable screening test exists for women at average risk. Knowing the subtle symptoms — persistent bloating, feeling full quickly, pelvic or abdominal discomfort, urinary urgency — and reporting them promptly is the best early-warning approach.

Should I get genetic testing? Yes — most women with ovarian cancer should be offered testing for BRCA and related genes, because the results guide targeted treatment and inform your relatives' risk.

Why isn't radiation used as much for ovarian cancer? Because ovarian cancer tends to spread across the whole abdomen, chemotherapy that reaches everywhere is more effective as the main treatment. Radiation is reserved for focused jobs — treating a single spot or relieving symptoms.

This guide is informational only. It is not medical advice — please confirm anything here with your care team.