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 analyzed retrospectively. 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.