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Ovarian Cancer Health Center

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Can Symptoms Predict Ovarian Cancer?

Study Shows Only 1 in 100 Women With Symptoms Are Later Diagnosed With Ovarian Cancer
WebMD Health News
Reviewed by Louise Chang, MD

Jan. 28, 2010 -- When symptoms such as nausea, bloating, or pelvic or abdominal pain suggest ovarian cancer, evaluation results in a diagnosis of ovarian cancer in about 1% of the time, according to a new study.

''This [study] put a number on understanding how many women with [these] symptoms are really likely to have ovarian cancer," says study researcher Mary Anne Rossing, PhD, of the Fred Hutchinson Cancer Research Center in Seattle. The study is published online in the Journal of the National Cancer Institute.

''Among women who have symptoms suggestive of ovarian cancer, the number who actually has ovarian cancer is one in 100," Rossing says. "The number who has early stage is even lower."

Even so, Rossing and other experts say the new findings don't refute earlier research that suggested ovarian cancer is no longer a "silent killer." A 2009 British study linked seven key symptoms to ovarian cancer.

''Symptoms exist, we should pay attention to them, but they are not a diagnostic or screening test, and they are not specific," says Beth Karlan, MD, director of the Women's Cancer Research Institute at the Samuel Oschin Comprehensive Cancer Institute at Cedars-Sinai Medical Center in Los Angeles, who co-wrote an editorial published with the study. Symptoms that could point to ovarian cancer are sometimes vague and could also point to a host of other medical problems.

Rossing and colleagues interviewed 812 women, ages 35 to 74, who had been diagnosed with ovarian cancer from January 2002 through December 2005. They also interviewed 1,313 women from the general population without a diagnosis of the cancer.

Women reported whether they had any of the symptoms associated with ovarian cancer (nausea, diarrhea, or constipation, pelvic or abdominal pain, bloating or feeling full, urinary frequency or urgency), how long they had had them, and how often.

Then the researchers evaluated whether each woman's ''symptom index" was positive. It was positive if pelvic or abdominal pain or bloating or feeling full was reported at least daily for a week or more, with an onset of less than 12 months before the diagnosis (or before a specific reference date for the healthy women).

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