What kind of disease is breast cancer

The female breast is composed of skin, fibrous tissue, mammary glands and fat. 99% of breast cancer occurs in women, while only 10% occurs in men. The breast is not an important organ for maintaining human life, and in situ breast cancer is not fatal; however, because breast cancer cells have lost the characteristics of normal cells, the connection between cells is loose and easy to fall off.

The breast is not an important organ for maintaining human life, and in situ breast cancer is not fatal; however, because breast cancer cells have lost the characteristics of normal cells, the connection between cells is loose and easy to fall off. Once the cancer cells fall off, the free cancer cells can spread throughout the body with the blood or lymph fluid, forming metastasis and endangering life. At present, breast cancer has become a common tumor that threatens the physical and mental health of women.

The global incidence of breast cancer has been on the rise since the late 1970s. One in eight women in the United States will develop breast cancer in her lifetime. China is not a country with a high incidence of breast cancer, but we should not be optimistic. In recent years, the growth rate of breast cancer incidence in my country has been 1 to 2 percentage points higher than that in high-incidence countries. According to the 2009 breast cancer incidence data released by the National Cancer Center and the Disease Prevention and Control Bureau of the Ministry of Health in 2012, the incidence of breast cancer in the national tumor registration areas ranked first among female malignant tumors. The total incidence rate (crude rate) of female breast cancer in the country is 42.55/100,000, 51.91/100,000 in cities and 23.12/100,000 in rural areas.

Breast cancer has become a major public health issue in today's society. Since the 1990s, the global breast cancer mortality rate has shown a downward trend. The reasons are: first, the development of breast cancer screening has increased the proportion of early cases; second, the development of comprehensive breast cancer treatment has improved the efficacy. Breast cancer has become one of the solid tumors with the best efficacy.