What is ovarian cancer?

Ovarian cancer happens when cells that are not normal grow in one or both of your ovaries. This topic is about epithelial ovarian cancer, the most common type.

This cancer is often cured when it is caught early. But most of the time, the cancer has already spread by the time it is found.

It is frightening to hear that you or someone you love may have ovarian cancer. It may help to talk with your doctor or join a support group to deal with your feelings.

What causes ovarian cancer?

We do not know what causes it. Some women who have it also have a family history of cancer. But most do not.

Some women are more likely than others to get this rare cancer. Women who are past menopause or who have never been pregnant are more likely to get ovarian cancer.

What are the symptoms?

Ovarian cancer does not usually cause symptoms at first. But most women do have some symptoms in the 6 to 12 months before ovarian cancer is found. The most common symptoms are gas and pain or swelling in the belly. Other symptoms are diarrhea or constipation, or an upset stomach.

But these symptoms are so general that they are more likely to be blamed on a number of other causes. Most of the time, the cancer has already spread by the time it is found.

How is ovarian cancer diagnosed?

Sometimes the doctor may feel a lump in or on an ovary during a routine pelvic exam. Often a lump may be seen during an ultrasound. Most lumps are not cancer.

The only way to know for sure that a woman has ovarian cancer is with biopsies taken during surgery. The doctor makes an incision in the belly so that he or she can look inside. The doctor will remove bits of any tumors that are found and send them to a lab to confirm that they contain cancer.

There is a blood test called CA-125 (cancer antigen 125) that is sometimes done to look for cancer in women at high risk. So far, there is not enough proof to show that this test works to find ovarian cancer early in most women. Too much CA-125 in the blood can be caused by many things, like the menstrual cycle, endometriosis, and uterine fibroids, as well as many types of cancer.

How is it treated?

Surgery is the main treatment. The doctor will remove any tumors that he or she can see. This usually means taking out one or both ovaries. It may also mean taking out the fallopian tubes and uterus. After surgery, most women have several months of chemotherapy, which means taking drugs that kill cancer cells.