A new study from the American Cancer Society confirms the bleak outlook for detecting ovarian cancer, known as the "silent killer" because of the challenges in diagnosing the disease early enough to treat it.The study found that current methods of screening for ovarian cancer -- pelvic exams, ultrasounds and blood tests -- reduce the number of deaths by just 11 percent, considered only "a modest reduction" in fatality risk."They are not accepted screening tests per se," said Dr.