Breast ultrasound (sonography) is an invaluable technique that utilizes sound to image tissue. We use breast ultrasound to evaluate lumps that are palpable or found by mammography or MRI. Breast Ultrasound can distinguish fluid filled cysts from solid growths. With ultrasound, we are able to “see” into the tissue in a different way; There is no radiation exposure with ultrasound. In women under the age of 30 with a palpable lump, ultrasound is the first imaging test of choice. All new lumps should be evaluated with ultrasound, since some growths may hide in glandular tissue and not be visible on mammography. If you have a lump, it is extremely important that you alert the imaging staff so that the radiologist can perform the necessary additional ultrasound examination.