Original study| Volume 13, ISSUE 5, P392-400, October 2013

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Ultrasound Elastography of Breast Lesions in Chinese Women: A Multicenter Study in China



      Through analysis, the elastograms characteristics of breast lesions of Chinese women, a suitable diagnostic standard of quasistatic ultrasound elastography (UE) for Chinese women was proposed.


      From June 2010 to March 2012, 1036 consecutive female patients (mean age, 44 years old) with breast lesions were recruited into a multicenter retrospective study, which involved 8 centers across China. Each institutional ethic review board approved the study, and all the patients gave written informed consent. All breast lesions underwent ultrasound and UE examination. Two radiologists analyzed the elastograms and separated the elastograms into 10 types. A final diagnosis was made on the basis of histologic findings. The characteristics of the elastograms were analyzed. Receiver operating characteristic curves were plotted for evaluating the diagnostic performance. Sensitivity, specificity, and accuracy were calculated. Differences in sensitivity, specificity, and accuracy were tested by using the McNemar test.


      There were 1150 lesions (593 benign, 557 malignant). There was a highly significant correlation between the elastogram color distribution and the percentage of malignant lesions, with a value of 0.92 (2P < .0001). Through analysis the different malignant percentages in different elastogram types, UE diagnostic standard was proposed, which was correlated with the blue percentage in the elastogram. The specificity, sensitivity, and accuracy of UE were 86.4%, 80.8%, and 83.5%, respectively. The specificity and accuracy of UE were higher than with ultrasound. The area under the curve was 0.86.


      UE could give valuable assessment in the diagnosis of breast lesions. The proposed UE diagnostic standard was suitable for Chinese women.
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