Palpable breast lesions: utility of Doppler sonography for diagnosis of malignancy.

This study was designed to find whether there are any differences between benign and malignant palpable breast lesions as they are seen on grey-scale and colour-Doppler and on power-Doppler sonography; to determine which variables for each technique are most helpful in distinguishing any such differences; and to see whether the use of an echo-enhancing agent gives better results in the differential diagnosis. Forty-five palpable breast lesions (16 benign and 29 malignant) were evaluated in a preoperative study using grey-scale sonography, colour-Doppler sonography and power-Doppler sonography before and after administration of an echo-enhancing agent (Levovist). We reached the following conclusions: (1) In the grey-scale ultrasound study of palpable breast lesions the presence of microcalcifications, acoustic shadowing and non-well-defined margins are related to malignancy. (2) Colour- and power-Doppler sonography may help in the differential diagnosis. (3) The use of an echo enhancer (Levovist) accentuates these differences and enables them to be noted in other variables, such as pulsatility index, nodule-to-vascularity ratio and number of poles.