BREAST CANCER BASE

Outlined
The majority of breast cancer origins of breast tissue (breast cancer), and a minority can be derived from the various non-breast epithelial organizations (sarcoma), the duality can be seen mixed in carcinosarcoma. The incidence of breast cancer in China after cervical cancer, the incidence of crowd 23/10 10000; With the cancer accounted for the 7 ~ 10%.

Etiology
The cause of breast cancer is not completely clear, have confirmed the incidence of certain factors still exist in a number of controversies. Pre-menopausal and post-menopausal estrogen stimulation is the obvious factors of breast cancer. In addition, genetic factors, diet, physical and chemical factors outside of certain benign breast disease and breast cancer is certainly happen.

One, there painless breast lumps, most of inadvertent or census found. Mass border checks owed money, and hard, rough surface, activities for small or completely fixed, and skin adhesion and emerging wine <BR> Waterloo levy, can be felt in the ipsilateral axillary lymph nodes and swelling. The case of late, there may be the breast skin lymphedema, orange peel was like change, the surrounding skin satellite Festival, the mass can shew evil smell.

2, and B-helpful in the diagnosis, a method of choice.

Breast cancer and other tumors, often through the blood or lymphatic Road spread to other parts.
(1), lymph node metastasis : axillary lymph nodes and internal mammary lymph node metastasis of breast cancer is the No. 1 station. Breast cancer patients armpit lymph node metastasis in the high rate of clinical reports of patients with breast cancer is 50% to 70% have axillary lymph node metastases. Axillary lymph node metastasis and primary tumor size of the tumor size, the greater the rate of axillary lymph node metastasis, the higher transfer several more.
Intramammary lymph node metastasis and tumor and the stage of the disease. It was reported that the lesion in the lateral breast milk within its metastasis rate of 12 was 70.9%, lesions were located in its central transfer rate of 22%, lesions were located in the medial transfer rate of 21 was 70.9%. There axillary lymph node metastasis in patients its internal mammary lymph node metastasis rate also increased.
The supraclavicular lymph node breast lymphatic drainage of the two stations, mainly via the transfer of axillary lymph nodes or internal mammary lymph nodes, most of the ipsilateral and contralateral to be transferred to the supraclavicular lymph nodes.
Tumor cells can reverse way through the transfer of contralateral axillary or inguinal lymph nodes.
(2) hematogenous metastasis : breast cancer cells can be directly caused invasive vascular distant metastasis. The incidence of distant metastasis rate and the primary tumor size, lymph node metastasis, and the number of pathological classification. The most common distant metastasis to lung, bone Secondly, pleura, liver, brain and adrenal so. Although prone to breast cancer metastasis and hematogenous metastasis, but if effective control measures, it will effectively control their transfer. 