Elastography is a new ultrasound technique based on the idea of palpation which states that malignant tissues are harder than benign. Thus by measuring tissue stiffness we can estimate the probability of malignancy.Elastography is performed in the same session of ultrasound taking about five minutes more than the conventional ultrasound examination. By means of light compression with the probe the image will be displayed either by the lesion size comparison method or the colour coding method.