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EDUCATION EXHIBIT |
1 From the Departments of Radiology (P.S., E.S.d.P., J.D.W.) and Pathology (M.M.G.), Medical College of Virginia of Virginia Commonwealth University, Richmond. Presented as an education exhibit at the 2000 RSNA scientific assembly. Received March 22, 2001; revision requested May 18 and received September 21; accepted September 24. Address correspondence to P.S., 9641 Kingscroft Dr, Glen Allen, VA 23060 (e-mail: psamardar@yahoo.com).
The American College of Radiology (ACR) Breast Imaging Reporting and Data System (BI-RADS) defines four different types of asymmetric breast findings: asymmetric breast tissue, densities seen in one projection, architectural distortion, and focal asymmetric densities. These lesions are frequently encountered at screening and diagnostic mammography and are significant because they may indicate a neoplasm, especially if an associated palpable mass is present. Once these lesions are detected at standard mammography, supplementary breast imaging with additional mammographic views and ultrasonography (US) can be a key aspect of work-up. The role of US in this setting has not been clearly defined. However, a positive US finding such as a solid mass or an area of focal shadowing increases the level of suspicion for malignancy. A thorough knowledge of the patients clinical history, along with a fundamental understanding of the ACR BI-RADS lexicon and the role and limitations of supplementary breast imaging, will allow more accurate interpretation of these potentially perplexing soft-tissue findings.
© RSNA, 2002
Index Terms: Breast, 00.91, 00.92 Breast, US, 00.1298 Breast neoplasms, 00.32 Breast neoplasms, radiography, 00.114, 00.115 Breast neoplasms, US, 00.1298 Breast radiography, 00.114, 00.115
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