期刊
JOURNAL OF BREAST CANCER
卷 18, 期 1, 页码 73-79出版社
KOREAN BREAST CANCER SOC
DOI: 10.4048/jbc.2015.18.1.73
关键词
Breast neoplasms; Mammography; Positron-emission tomography; Ultrasonography
类别
Purpose: The aim of our study was to evaluate the risk of malignancy and to determine which clinical variables differentiate between benign and malignant focal breast lesions found incidentally on F-18-flourodeoxyglucose positron emission tomography and computed tomography (FDG PET/CT). Methods: From March 2005 to October 2011, 21,224 women with no history of breast cancer underwent FDG PET/CT at three university-affiliated hospitals. We retrospectively identified 214 patients with incidental focal hypermetabolic breast lesions and grouped them into benign and malignant lesion groups. Of the 214 patients, 82 patients with 91 lesions were included in this study. All lesions were confirmed histologically or were assessed by follow-up imaging for greater than 2 years. The patient age, maximum standardized uptake value (SUVmax), lesion size on ultrasonography (US), and Breast Imaging-Reporting and Data System (BI-RADS) category on US in conjunction with mammography were com-pared between the groups. Multivariate logistic regression analysis was used to identify independent factors associated with malignancy. Results: The risk of malignancy was 29.7% (27/91) in breast incidentalomas detected by FDG PET/CT. The univariate analysis showed that the patient age, SUVmax, tumor size, and BI-RADS category differed significantly between the malignant and benign groups. The multivariate analysis showed that the BI-RADS category was the only significant factor differentiating benign from malignant lesions (p=0.002). Conclusion: BI-RADS category based on US in conjunction with mammography was the only useful tool to differentiate between malignant and benign lesions in breast incidentalomas on FDG PET/CT.
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