It is not scientific to say that where breast cancer grows is the most dangerous place. Once breast cancer occurs, it may jeopardize the life and needs to be treated in time. Breast cancer is a common malignant tumor in women, and the occurrence of the disease is related to heredity, gene mutation and other factors. Breast cancer is most common in the upper outer quadrant of the breast, and with the development of the disease, axillary lymph node metastasis, lung metastasis and bone metastasis can occur. No matter where the breast cancer lump occurs, if it is not treated in time, it is very dangerous, which will jeopardize the patient’s life and reduce his/her quality of life. Therefore, once you have any discomfort, you should go to the hospital for standardized diagnosis and treatment in time to avoid delaying your condition. However, after treatment, a certain survival rate of five years can often be obtained, and patients can actively cooperate with the treatment without excessive panic.