The role of BI-RADS classification in ultrasonic diagnosis of breast cancer
WU Meng1, WANG Xue-mei2, ZHOU Ru-hai1
1. Department of Ultrasound, Yinzhou People’s Hospital, Ningbo Zhejiang 315040, China;2. Department of Ultrasound, Obstetrics & Gynecology Hospital of Fudan University, Shanghai 200011, China
Abstract Objective: To study the role of BI-RADS classification(Breast imaging reporting and data system) in ultrasonic diagnosis of breast cancer. Methods: A total of 71 patients with breast diseases who would undergo surgery were selected for study. All the patients underwent bilateral breast examination with high-frequency color Doppler ultrasonography. According to BI-RADS classification, 61 patients(78 breast lesions) with BI-RADS grade 3~5 were recruited. The diagnostic characteristics of high-frequency color Doppler ultrasonography about breast lesions with different BI-RADS were compared with the histopathological diagnosis. Then the efficacy of BI-RADS classification for the identification of breast cancer was assessed. Results: In all the 61 patients(78 breast lesions), confirmed by histopathology, 24 were BI-RADS grade 3, in which 20(83.33%) were benign, 4(16.67%) were malignant. Twenty-nine breast lesions were BI-RADS grade 4, and histopathology confirmed 3(10.34％) were benign, 26(89.66％) were malignant． Twenty-five lesions were BI-RADS grade 5, and all the lesions were malignant confirmed with histopathology(100％)． Sensitivity and specificity were 92.73% and 86.96% respectively in the diagnosis of breast cancer by BI-RADS classification. Statistical difference was found in BI-RADS grade 3, 4, 5 in margin, lesion boundary, acoustic feature，the changes of surrounding tissue，calcification in mass, vascularity in lesion blood flow and resistance index(RI). Conclusion: The sensitivity and specificity of the BI-RADS classification were high in diagnosing breast cancer. It has important clinical significance for high-frequency color Doppler ultrasound in the diagnosis of breast cancer and treatment planning.
2013, Vol. 24 
