The differences of phyllodes and acoustic attenuation in breast lesions diagnosed with Breast Imaging-Reporting and Data System for Ultrasonography (BI-RADS-US) category 4C

Objective: This study aimed to discuss the differences of malignant findings in breast lesions diagnosed with Breast Imaging-Reporting and Data System for Ultrasonography (BI-RADS-US) category 4C to determine which malignant findings are more important. Materials and Methods: A total of 159 cases of breast lesions diagnosed with BI-RADS-US category 4C were analyzedretrospectively. All patients got pathological results (81 cases of benign; 78 cases of breast cancer). Two doctors scanned and diagnosed the patients, with another doctor recording ultrasonographic findings retrospectively. The differences were compared by means of the Chi-square (χ2) test. Results: Phyllodes and acoustic attenuation had statistical differences in the comparison of breast lesions (p < 0.05). Irregular shape, indistinct boundary, poorly-defined margin, penetrating or tortuous surrounding vessels, RI ≥ 0.7, and microcalcification had no statistical differences in the comparison of benign and malignant breast lesions. Conclusions: Phyllodes and acoustic attenuation are the more important malignant ultrasonographic findings of breast cancer. The malignant ultrasonographic findings are not unique for breast cancer.

Malignant ultrasonographic findings of breast; BI-RADS-US; Differential diagnosis of breast lesions.

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