The bosom is the brightest part of a woman’s body, but sometimes it adds to her worries. According to statistics from the Health Care Commission, the number of women suffering from breast cancer in China is increasing year by year. In 2003, there was an average of 40.6 breast cancer cases per 100,000 population, while in 2013, the number of breast cancer cases per 100,000 population has increased by 56% to 63.2, which is the most common cancer among women in China. Moreover, there is a trend of younger breast cancer patients in China, with nearly 20% of breast cancer patients under the age of 40, and the median age is between 45 and 49; unlike in Western countries where most breast cancer patients are already post-menopausal and more than 60 or 70 years old. For this reason alone, women in China should be on their toes and have annual mammograms from the age of thirty onwards. Regular annual mammography (mammography) screening for non-high-risk women between the ages of 45 and 69 can help to detect abnormal calcifications and breast cancer that cannot be felt at an early stage. However, mammography is an X-ray of the breast, which is radioactive and not suitable for “young” breasts. Young women’s breasts are more dense and have more mammary glands, so it is difficult for the physician to interpret whether the examination is normal or not under X-ray. Breast ultrasound is a non-invasive examination, there is no radiation concerns, and the procedure does not cause pain to the patient. The ultrasound emitted by a high-frequency probe examines both breasts and the armpits to assess whether there is a lump in the breast, with no harm or side effects. If you suddenly feel a lump in your breast that is hard and strange and want to know what is wrong with it, you can go to the clinic and ask your doctor to examine it with a breast ultrasound before deciding what to do next.