Prevalence and clinical significance of incidental extra-mammary findings in breast magnetic resonance imaging: A retrospective study of 1070 patients

Publication date: Available online 10 June 2017
Source:Clinical Imaging
Author(s): Wieland Staab, Jan Menke, Christian Sohns, Susanne Wienbeck, Lukas Bauer, Johannes Tammo Kowallick, Frank Konietschke, Thorsten Derlin, Joachim Lotz, Jan Martin Sohns
PurposeThe purpose of this study was to analyze the prevalence of extra-mammary findings in magnetic resonance imaging (MRI).Materials and methodsData from 1070 consecutive breast MRI studies was analyzed. MR-BI-RADS (Breast Imaging Reporting and Data System) was used to classify the risk category.ResultsAccording to MR-BI-RADS, 915 (85.5%) of 1070 women were classified into MR-BI-RADS categories 1–3, and 155 (14.5%) into MR-BI-RADS categories 4–5. MR-BI-RADS categories 4–5 had a 10-times higher risk for major extra-mammary findings (odds ratio 10.1, P<0.01).ConclusionExtra-mammary findings are common and may have important clinical consequences.



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