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Study examines BI-RADS and MRI in predicting breast cancer
Date:5/14/2012

OAK BROOK, Ill. A large, multicenter study found that the Breast Imaging and Reporting Data Systems (BI-RADS) terminology used by radiologists to classify breast imaging results is useful in predicting malignancy in breast lesions detected with MRI. Results of the study are published online in the journal Radiology.

"BI-RADS was developed to standardize the lexicon of breast imaging reports and to help ensure patients receive proper follow-up," said Mary C. Mahoney, M.D, director of breast imaging at the University of Cincinnati Medical Center in Ohio. "The BI-RADS lexicon for breast MRI provides descriptors and assessment categories that can be used to help predict the likelihood of cancer."

BI-RADS, published by the American College of Radiology in collaboration with other healthcare organizations, is a quality assurance tool used to standardize reporting for breast imaging exams. The system, initially developed for mammography, was expanded in 2003 to include both MRI and ultrasound imaging of the breast. MRI breast screening exams are often performed on women at high-risk for breast cancer and on patients with newly diagnosed breast cancer.

Radiologists assign breast imaging studies a BI-RADS an assessment of zero to six based on their interpretation of the images and characterization of any lesions present.

The multicenter study was launched to evaluate the performance of BI-RADS for MRI of the breast and to identify the breast imaging features that were most predictive of cancer. Participants in the study included 969 women who had recently received a breast cancer diagnosis in one breast and underwent breast MRI on the other breast at one of 25 participating imaging sites.

The analysis of the MRI data revealed that a BI-RADS assessment of 5, defined as highly suggestive of malignancy, and the identification of a massa three-dimensional grouping of abnormal cellswere most predictive of cancer.


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Contact: Linda Brooks
lbrooks@rsna.org
630-590-7762
Radiological Society of North America
Source:Eurekalert

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