Second-look ultrasonography for MRI-detected suspicious breast lesions in patients with breast cancer

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this study is to evaluate the use of second-look ultrasonography (US) forinvestigating additional suspicious lesions detected on preoperative staging magnetic resonanceimaging (MRI) for breast cancer.
Methods: Between September 2008 and August 2010, 1,970 breast MRIs were performed atour medical institution for the evaluation of breast cancer before surgery. Second-look US wasrecommended for 135 patients with 149 suspicious lesions, following the MRI interpretation,and 108 patients with 121 lesions were included in this study. The detection rate on second-lookUS, according to the lesion type, diameter, and histopathological outcome, was analyzed.
Results: Of the 121 lesions considered in this study, 97 (80.2%) were diagnosed on MRI asmasses and 24 (19.8%) as non-mass-like lesions; 105 lesions (86.8%) were correlated and 16(13.2%) were not correlated with the findings of second-look US. Of the 105 correlated lesions,29 (27.6%) were proven to be malignant and 76 (72.4%) were benign. Although a greaternumber of large malignant lesions were correlated on second-look US than small benign lesions,there was no statistically significant difference according to lesion diameter or type, as seen onMRI or pathology.
Conclusion: We have concluded that second-look US is a useful diagnostic tool for lesionsincidentally detected on breast MRI, as in this study, it could identify 86.8% of the MRI-detectedbreast lesions.

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