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Adding ultrasound screening to mammography brings benefits, risks
Date:5/13/2008

PROVIDENCE, R.I. [Brown University] Adding a screening ultrasound examination to routine mammography reveals more breast cancers than mammography alone, according to results of a major new clinical trial. The trial, however, also found that adding an ultrasound exam also increases the rate of false positive findings and unnecessary biopsies.

Results of the clinical trial, conducted by the American College of Radiology Imaging Network (ACRIN) and analyzed by Brown University statisticians, appear in the May 14, 2008 issue of the Journal of the American Medical Association.

The trial uncovered a significant trade-off with ultrasound screening, said Jeffrey Blume, an associate professor in the Department of Community Health and the deputy director of the ACRIN Biostatistics and Data Management Center at Brown. While supplemental ultrasound screening uncovers more breast cancers, it also substantially increases the risk of a false positive cancer finding and unnecessary biopsy.

The medical community may well decide that the screening benefit is offset by the increase in risk to women from a false positive finding, Blume said. However this study also shows that supplemental ultrasound may be beneficial in women at high risk of breast cancer who could not, or would not, otherwise undergo a magnetic resonance imaging scan. Women should consult their doctor for more information.

A biostatistician and trial methodologist, Blume oversaw the statistical design of the ACRIN trial and led the analysis of the study, which enrolled 2,809 women in 21 clinical sites in the United States, Canada and Argentina. Participants were women at increased risk for breast cancer women 25 years or older, women with dense breasts, women with a family history of breast cancer, and women whod already had a breast biopsy.

The goal of the study was to determine whether the addition of a screening ultrasound to the current screening practice of m
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Contact: Wendy Lawton
Wendy_Lawton@brown.edu
401-863-1862
Brown University
Source:Eurekalert

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