1. What is breast cancer?
The number of normal cells increases when
needed. It can also die when it ages or is damaged. Cancer cells, by contrast, can make new cells quickly, making them live longer. Cancer is a cellular disease that begins when cells begin to proliferate out of control. A tumor is malignant (cancerous) if the cells grow into surrounding tissue (invasion) or spread to distant parts of the body (metastasis). Women account for the vast majority of breast cancer, but men are also quite likely to suffer from the disease. Breast cancer mostly originates in the duct, a small part is lobular, a small part is breast cancer, and other tissues also occur.
2. Breast cancer is not far away
.
The global survey shows that among all malignant tumors, the new cases of female breast cancer account for the first place, and the death cases of female breast cancer also account for the first place in all malignant tumors. In 2015, there were about 304,000 new cases of female breast cancer in China, ranking first among all malignant tumors, with about 70,000 deaths, ranking fourth among all malignant tumors. One out of every four people has breast cancer.
3. Distribution characteristics
of breast cancer in China The incidence of breast cancer
in China is increasing at a higher rate than world average. Whether in urban or rural areas, there is a more significant and sustained upward trend in rural areas. The age of morbidity was early, and the peak was morbidity around 55 years old. Active intervention on known breast cancer risk factors is expected to reduce the incidence of breast cancer.
4. What is the prognosis of breast cancer?
An important indicator of the prognosis of
breast cancer patients is the 5-year relative survival rate. Assessing the impact of tumors on survival is a more accurate method. These rates compare breast cancer patients to the general population. For example, the relative survival rate for breast cancer is 90% at five years, which means that breast cancer patients have a 90% chance of surviving five years on average after diagnosis, and these people do not have this cancer. The 5-year survival rate was 90.2% in American women, 91.8% in Shanghai women, and 83.2% in Chinese women. The annual change in mortality was 1.1%, and the annual change in morbidity was 3.9%. The diagnosis and treatment of breast cancer in China and the survival rate of patients are basically the same as those in the United States, and the five-year survival rate in developed areas such as Shanghai, Beijing, Tianjin and Guangzhou even exceeds the average level in the United States.
