(DCIS) is one of the most common malignant tumors in women. The detection rate has been increasing year by year with the continuous advancement of medical imaging technique. Ultrasonography is one of the conventional imaging examination of breast disease. In the evaluation of DCIS
ultrasound is considered to be an adjunct to screening mammograph
particularly important in patients with symptomatic DCIS. Due to the update of ultrasound equipment and appearance of new techniques such as ultrasound elastography and contrast-enhanced ultrasound
the ultrasonic detection rate of DCIS is improved. The application of multiple ultrasound techniques enables early diagnosis of DCIS. It plays an important role in the early detection and early treatment of DCIS.