Abstract

Woolas RP, Oram DH, Jeyarajah AR, Bast RC Jr, Jacobs IJ. Ovarian cancer identified through screening with serum markers but not by pelvic imaging. This study evaluated the possible role of 3 additional tumor markers to CA 125 among postmenopausal volunteers participating in a sequential multimodal ovarian cancer screening study. In 82 asymptomatic women the finding of a serum CA 125 level of > 30 U/ml precipitated pelvic ultrasound examination. Levels of CA15-3, CA72-4 and CA19-9 were subsequently determined in sera stored from the time of the CA 125 assay. Following ultrasound 29 women underwent surgery for benign conditions. The remaining 53 women underwent 2 years of surveillance. In 5 of these women a diagnosis of ovarian cancer was established between 6 and 10 months after their initial investigation. Elevated levels of at least one of the 3 additional tumor markers were present in the serum, prior to ultrasound abnormalities being detected, in 4 (80%) of the women who developed cancer. At least one of this 3-marker panel was elevated in 29% of the 48 women who have not developed cancer and 14% of the 29 women undergoing surgery for benign conditions. Information complementary to pelvic ultrasound examination for the preclinical detection of ovarian cancer could be obtained through multiple marker assay. Coordinated elevated serum levels of tumor markers could increase the sensitivity of this sequential screening protocol.

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