Prevalence and clinical significance of incidental extra-mammary findings in breast magnetic resonance imaging: A retrospective study of 1070 patients.
PURPOSE
The purpose of this study was to analyze the prevalence of extra-mammary findings in magnetic resonance imaging (MRI).


MATERIALS AND METHODS
Data from 1070 consecutive breast MRI studies was analyzed. MR-BI-RADS (Breast Imaging Reporting and Data System) was used to classify the risk category.


RESULTS
According 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).


CONCLUSION
Extra-mammary findings are common and may have important clinical consequences.
['Staab|Wieland|W|', 'Menke|Jan|J|', 'Sohns|Christian|C|', 'Wienbeck|Susanne|S|', 'Bauer|Lukas|L|', 'Kowallick|Johannes Tammo|JT|', 'Konietschke|Frank|F|', 'Derlin|Thorsten|T|', 'Lotz|Joachim|J|', 'Sohns|Jan Martin|JM|']
D000328:Adult D000368:Aged D001940:Breast D001943:Breast Neoplasms D005260:Female D005858:Germany D006801:Humans D033162:Incidental Findings D008279:Magnetic Resonance Imaging D008875:Middle Aged D015995:Prevalence D012189:Retrospective Studies D018570:Risk Assessment D012307:Risk Factors
Breast Magnetic resonance imaging Breast cancer Incidental findings Mammography