USEFULNESS OF RESISTIVE INDEX TO DIFFERENTIATE BENIGN FROM MALIGNANT BREAST LESIONS USING COLOR DOPPLER ULTRASOUND

Abstract

Objectives: The aim of the study is to analyze the usefulness of resistive index in differentiating benign lesions from malignant breast lesions among suspected breast cancer patients using color Doppler ultrasound.
Method: The study was conducted in the Department of Diagnostic Radiology in Lahore General Hospital, from March 2022 to May 2022. Prospective cross-sectional study and convenient sampling technique was used. Total 200 patients suspected of Breast cancer after clinical examination were included in the study. Color Doppler ultrasound was performed. Systolic peak and resistive index were evaluated for each patient and results were compared with biopsy and cytology reports.
Results: From the results of color Doppler ultrasound, 86 lesions were found malignant and 114 breast lesions were found benign. From findings mean value of RI in malignant lesions was 0.76 ± 0.092 and in benign lesions was 0.64 ± 0.064. Statistical significance was found 0.05. It was also observed that benign breast lesions showed less vascularity in comparison to high vascularity in malignant breast lesions. Increased vascularity in benign lesions was 37.7% and in malignant lesions was 96.5%. Systolic velocity and systolic peak were low in benign lesions and in malignant lesions high systolic velocity and sharp systolic peak was observed.
Conclusion: In developing countries where public health screening programs are not sufficiently available, color and spectral Doppler ultrasound has an important role in early detection of breast cancer. It is a noninvasive imaging technique. Resistive index, systolic peak and hyper vascularity are useful indicators for differentiating benign lesions from malignant breast lesions.