RESUMEN
Breast ultrasound and mammography are established procedures for the diagnosis of breast masses while new technology is opening the door for early cancer diagnosis. The limitation of ultrasound and mammography is that they are only based on physical properties. Recently, using a color doppler system, detection of color flow signal and a resistance index that depend on the blood flow and the blood velocity was applied for diagnosis of breast malignancy. Sixty-five patients admitted for breast surgery were studied. The final diagnosis was made by pathology for thirty malignancies and thirty-five benign lesions. The color doppler measurements on the breast lesions were made preoperatively. The following parameter were assessed :flow velocity, color signal grade and resistance index. The results are as follows: 1) Color signals were detected in twenty-four of the thirty malignancies and in seven of thirty-five benign lesions. 2) Malignant lesions showed a significantly higher maximum velocity (mean=12.52 cm/sec vs 6.34 cm/sec). 3) The resistance index values in the malignancies was higher compared to that in the benign lesions (P 0.05). Color doppler flow examination is a useful method for evaluation of benign and malignant breast lesions.