Breast cancer, the factors are as follows: (1) the real causes of breast cancer is not yet clear, only to understand the occurrence of breast cancer and endocrine, genetic, viral, immunologic, and environmental factors. At the same time clear that some factors and breast cancer are more closely related to these factors have also been described as a susceptibility factor, which includes: Any family history of breast cancer, especially compatriots is a natural mother or sister with breast cancer, if the breast Cancer incidence in premenopausal women, the risk of breast cancer or both, then the genetic susceptibility to markedly stronger. The side of patients suffering from breast cancer, contralateral breast easily than other people suffering from breast cancer, such as pathological diagnosis of lobular carcinoma in situ or focal cancer, breast cancer is just the other side of. Suffered from cystic disease of the breast, especially pathologically confirmed duct with active papilloma, also susceptible to breast cancer. More than the normal two or three times, early menarche (<12 years old), amenorrhea late (greater than 55 years), via life for more than 35 years above. Older unmarried, not pregnant or first child, 35-year-old full-term births in the future. Married not sterile, sterile, not breast-feeding. Pneumothorax or died of tuberculosis, several times to thoroughly chest X-ray examination or chest radiography History. History of dysfunctional uterine bleeding, or Palace of adenocarcinoma. Obese patients, especially in postmenopausal significantly obese or those with hypothyroidism. Immunocompromised persons or lack of. All these factors are more alert to the occurrence of breast cancer. (2) It is reported regular abortion women, the chance of getting breast cancer more. When abortion sudden termination of a pregnancy, is a fight against ovarian function, hormone sudden drop suddenly stop breast growth, acinar atrophy. The ups and downs of this phenomenon is a kind of inverse physiological state, in addition to ovarian dysfunction, but also may cause breast stasis caused mass in a variety of breast disease, breast cancer will increase the possibility. Therefore, many abortion is harmful to health, the incidence of breast cancer is related to, we should pay attention to doing well the initiative of contraception to avoid repeated abortions. (3) breast cancer is not hereditary breast cancer families very sensitive issue from many facts to prove that the incidence of breast cancer is the existence of tendency of family history. Clinical often visible in the mother of breast cancer and breast cancer in daughters are opportunities than women to be more than 2-3 times, and age of onset about 10 to advance. The incidence is even more common among sisters Obviously, if the mother suffering from breast cancer, while the mother is a sister of breast cancer, then his daughter in the risk of breast cancer before the age of 40 of the dangers of breast disease than no family history of the proportion of women suffering from breast cancer 40-50 times higher. If the previous generations are suffering from bilateral breast cancer and their descendants risk of breast cancer than the proportion of families with unilateral breast cancer three times higher, the general women 6-9 times.
In fact, breast cancer is not genetic, and the high incidence of breast cancer families, is the human genetic factors on the incidence of breast cancer by various indirect effects of what happened. Therefore, in patients with hereditary breast cancer is not on the tumor itself, but a tumor susceptibility. On this basis, exempt from the environment, diet, psychological state, endocrine status of a combination of factors such as the impact is a more ordinary people are more likely to have tumors. In short genetic breast cancer will not directly or indirectly there is the susceptibility, is continuing exploration and research.
In fact, breast cancer is not genetic, and the high incidence of breast cancer families, is the human genetic factors on the incidence of breast cancer by various indirect effects of what happened. Therefore, in patients with hereditary breast cancer is not on the tumor itself, but a tumor susceptibility. On this basis, exempt from the environment, diet, psychological state, endocrine status of a combination of factors such as the impact is a more ordinary people are more likely to have tumors. In short genetic breast cancer will not directly or indirectly there is the susceptibility, is continuing exploration and research.
