Table 2.

Comparison of mammography, sonography and MR mammography for preoperative prediction of histologically confirmed invasive cancer (n = 185) or benign disease (n = 254)

Diagnostic method	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Mammography	83.7	68.5	67.8	84.1	77.1
Sonography	89.1	79.1*†	65.7	90.9‡	83.4†
MR mammography	94.6*†	68.5	68.6	94.6†	79.5

^*P < 0.005, versus MR mammography; ^†P < 0.05, versus mammography; ^‡P < 0.05, versus sonography. NPV, negative predictive value; PPV, positive predictive value.