Oncology: breast cancer
Breast cancer malignant tumor, which occurs when cancer transformation of normal breast cells.
Breast cancer ranks first among all malignant tumors in women. There is at any age, but more often between the ages of 45 to 65 years. Very occasionally occurs in men. There are isolated descriptions of the children.In most cases, breast cancer occurs against the backdrop of precancerous changes.
Precancerous changes.
Above all, this dysplasia and breast papilloma protokov. Dysplasia breast comprises a process characterized by, on the wording of the WHO, a wide range of proliferative and regressive changes in breast tissue with an abnormal ratio of epithelial and components. Core Group constituted neproliferativnaya dysplasia and fibrous proliferative form of cystic disease.
The mechanism of tumor development.
Atypical cell begins to multiply hard, and cancer, respectively, is beginning to grow. Without breast cancer treatment, it is rapidly increasing in size, prorastaet in skin, muscle and chest wall. Through lymphatic cancer cells get into the next limfouzly. With current blood they spread throughout the body, giving rise to new tumors metastases. The most common breast cancer metastaziruet the lungs, liver, bone, brain. The defeat of these bodies, as well as the collapse of the tumor and leads to death.
Practice shows that the division is important because it had some predictive value. Infiltrative cancers have the worst prognosis in the clinic.
