Breast cancer is the most common malignant tumor in women and is the “female killer”. Studies show that the incidence rate of breast cancer in China is 5 years earlier than that of foreign countries. The incidence rate is higher in big cities with fast-paced and stressful lives, such as Shanghai, Beijing and Guangzhou. In recent years, the incidence of breast cancer among women in Xiamen has gradually increased, and the age of incidence is trending younger. Kang (a pseudonym) is 20 years old and a sophomore in college. 5 months ago, she felt a lump on the right side of her breast while taking a shower, but there was no physical discomfort. The company’s main business is to provide a wide range of products and services to its customers. Before the Spring Festival, Kang would often pay attention to herself and found that the lump was getting bigger as time went on. Kang felt that something was wrong, the week before the year, school holidays, back home, accompanied by family members rushed to the hospital. When Kang went to the hospital for examination, the outpatient clinic initially suspected that it was breast cancer. However, considering that the patient was still young, and to avoid psychological burden on the patient, the doctor decided to take the pathology first and then tell the patient and her family. After the puncture test was done, the pathology test results showed a medium to early breast cancer. At present, the doctor considered that due to the patient’s large lump, chemotherapy would be administered first, and the lump would be removed after shrinking and then breast reconstruction would be performed. Breast cancer is more common in women and less common in men. Unmarried women are at a higher risk of developing breast cancer than married women. The incidence increases with age and decreases slightly by about age 55. The main symptoms are breast lumps, breast pain, nipple discharge, nipple changes, breast skin changes, and enlarged axillary lymph nodes. The cause of the disease is not clear yet, but late marriage, early menarche, late menopause, history of benign breast disease, family history of breast cancer, radiation exposure, mental stress, and unhealthy lifestyle habits are all risk factors for the development of breast cancer. He reminded young mothers that it is very common to find hard lumps in the breast during breastfeeding, which are usually caused by inflammation, but clinical indications show that they may also be caused by tumors, so if you have other discomfort or doubts, you should go to the hospital for further examination. How to self-examine breast cancer Look: After taking a bath, stand in front of a mirror and check with your arms crossed and your body rotated to the left and right, observe from the mirror whether the bilateral breasts are symmetrical, whether the skin of the breast is abnormal and whether the nipple is invaginated. If the nipples are naturally sunken, there is no need to be overly nervous. Touch: Touch with the palm of your hand flat, with all four fingers together, in a circular motion and with appropriate intensity, using the most sensitive index, middle and ring fingers to lightly touch the inner upper, inner lower, outer lower, outer upper and axillary areas of the breast in order, and finally check the nipple and areola area in the middle of the breast. Do not squeeze and pinch with your hands to avoid mistaking normal breast tissue for a lump. Small lumps are not easily palpable, so hold the breast with your left hand and use your right hand to look for them during the examination. Lumps in the lower part of the breast are often concealed by the sagging breast, so you can hold up the breast or raise your arm lying down and check with the other hand, and deep lumps can also be examined in a forward bowed position if you cannot press them.