|ECR 2013 / C-2451|
|Evaluation of Palpation Imaging in Breast Lesion Diagnosis|
The area under the receiver operating characteristics curve(AUC) characterizing benign and malignant lesion discrimination was 0.884 (95%CI: 0.836～0.932, P<0.001) for PI（see Fig.1). The sensitivity of PI was 82.4%, which was significantly higher than that of physical examination (48%, P=0.000) but lower than that of either mammography (93.6%, P=0.003) or ultrasound (95.5%, P=0.000). The specificity of PI (80.0%) was significantly better than that of mammography (55.7%, P=0.002) and ultrasound (62.3%, P=0.023), and similar to that of physical examination (91.4%, P=0.096) (see Table 1 and Table 2). For patients with different breast composition on mammography, PI had similar sensitivity (87.3% for <50% glandular，77.4% for >50% glandular，P=0.166) and specificity ( 85.7% for <50% glandular，79.4% for >50% glandular，P=1.000).
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