1.What are the auxiliary breast examinations? Breast examinations include ultrasound, x-ray (mammogram), MRI, far infrared and so on. Ultrasound and X-ray (mammography) are the most common and effective screening methods; 2. Is mammography the best screening method? Worldwide, mammogram (mammography) is simply the best way to check breast tumor. It usually identifies the mass by resolution, so it has a strong relationship with the density of breast gland, especially when the density of breast tissue is low; with age, the glandular tissue of female breast gradually turns into fatty tissue, therefore, mammogram (mammography) is more effective in women older than 40 years old. Therefore, from a physical examination perspective, mammography (mammography) is usually chosen only for women over 35 years of age; however, this does not mean that mammography cannot be done for patients under 35 years of age, and in the case of patients with breast masses, mammography is usually done together to clarify the diagnosis. The literature reports that the invention of mammography (mammography) has increased the detection rate of early breast cancer from 1% to 20%, because some early breast cancers that have not yet formed tumors show fine calcifications, which is where the specialty of mammography lies. It should also be noted that saying it is the best does not mean that mammograms can detect 100% of tumors, and nearly 10% of tumors cannot be detected. 3. Why is it better to do mammogram (mammogram) over 35 years old? As mentioned before, the sensitivity of mammogram is related to the density of the breast. Young women usually have more developed glands and their density is higher, therefore, the effect of mammogram is not as good as older people. Secondly, X-rays themselves have a negative stimulating effect on the gland, so mammograms (mammograms) should be avoided if the purpose is physical examination. For those who want to diagnose, it is a different story. 4.Can ultrasound detect breast tumor? Ultrasound is an economical and sensitive means of breast examination, especially for Chinese people, because the age of onset of breast cancer in China is almost 10 years earlier than that of westerners, and the density of national glands is greater, which makes the sensitivity of mammogram (mammogram) decrease. Ultrasound has its place. Experienced ultrasonographers can detect very early malignant tumors. 5. Can ultrasound be done frequently? Yes, because ultrasound is based on the difference of reflection of ultrasonic waves reflecting the difference of material structure, rather than radiation, so the damage to human body is very small, so it can be done frequently. 6.Do I need to go to a big hospital for ultrasound? Ultrasound examination is of course related to the advanced degree of equipment; because of the relatively cheap price, the difference between the ultrasound equipment and instruments in large and small hospitals in China is not very big; ultrasound examination has a great relationship with the experience of the operator, therefore, the examination results of ultrasound doctors of breast specialists in large hospitals with a large number of patients are naturally closer to the actual situation. Therefore, the level of ultrasound examination in large hospitals is higher. 7. Why are the ultrasound results of two hospitals different? As mentioned earlier, besides the ultrasound results related to the instrument itself, the experience of the ultrasound examiner is also very important. Different hospitals, different instruments, different doctors, and different probe angles may make the ultrasound results different, such as size, nature, etc.