Comparison of CEM 
cancers
MALIGNANCIES, CANCERS
Comparative review of the diagnostic indices for CEM and MRI shows that although CEM detected fewer additional lesions than MRI, most (12 of 41 lesions, 29%) were false positives and only one of the six cancers was detected. In contrast, while MRI reported more false-positive lesions (20 of 41, 49%), it detected and correctly classified all six malignancies. False-positive findings on MRI resulted in 15 focused breast ultrasound exams and 15 needle biopsies. False-positive findings on CEM resulted in 7 focused ultrasounds and 8 needle biopsies.The sensitivities of CEM and MRI were 1/6 (16.7%, 95% confidence interval 0.4–64.1%) and 6/6 (100%, 54.1–100.0%), respectively (