BREAST CANCER BASE

With a few types of tumors, such as thyroid cancer similar to the natural course of breast cancer is usually very long, breast cancer cells, the doubling time is an average of 90 days, from the beginning of a malignant cell, after more than 30 doubled the tumor can be achieved in diameter% of the ball, it takes 7 ~ eight years. The causes of breast cancer have not been completely clear, reducing mortality is the best method for early detection and early treatment. In tumor metastasis, single-use surgical and radiation therapy can cure the majority of cases. In case of transfer of active treatment are only a small number of patients cured and therefore understand the nature of breast cancer. Help choose the best treatment for breast cancer programs.

Breast cancer can be directly extended to the surrounding areas, via lymphatic and blood flow. Lymph node is supposed to prevent cancer from the original tumor escaping the first barrier through the lymph node cells can usually barriers will recidivism supraclavicular lymph nodes, then penetrated into the venous blood. In addition to tumor metastasis armpit lymph nodes, but also involved parasternal lymph nodes, and many of the second and third and fourth intercostal, breast tumors located within half and areola area more so, from here then recidivism cancer mediastinal lymph nodes. Breast cancer cells can also directly caused invasive vascular distant metastasis. Intercostal sidelines through internal thoracic vein into the ipsilateral innominate veins entered the pulmonary circulation. Breast deep tissue, breast and chest wall of the vein into the axillary vein into subclavian vein and innominate veins, pulmonary metastasis is an important means of intercostal vein flow azygos vein and semi-azygos vein, the final lung superior vena cava, the vein system through the intervertebral vein, outside the vertebral venous plexus with the group after the vertebral Resting intricately linked, vertebral venous system and the inferior vena cava blood flow in intra-abdominal pressure can change each other flows, therefore, some patients in the absence of IVC lines (such as lungs) transfer before they arise skull, spine, pelvis and other transfers.

Long time, people found in the treatment of breast cancer, they might have distant metastases, although not yet clinically diagnosed, this constitutes a conservative implementation of the theoretical basis for chemotherapy. Today according to tumor size, lymph node involvement and the number of a variety of other biological characteristics preliminary estimate distant metastases small degree of danger there.