The way cancer and metastatic spread

By | April 9, 2012

Transfer and diffusion characteristics of malignant tumors, often the direct cause of death of patients, tumor metastasis and proliferation of channels has the following four:
1. Planting metastases: is the chest and abdominal tumor involving the serosa, the tumor cells shed into the serous cavities, planting in the near or distant serosa continue to grow, and can cause bloody effusion and adhesions.
2. Lymphatic metastasis: invasion of lymphatic tumor cells after the transfer with the lymph to the lymph nodes, the growth in the formation of lymph node metastases, and this is a common transfer method. Common in a variety of cancer cell invasion of lymphatic vessels with lymphatic First reach the regional lymph nodes, continue to develop can be transferred to nearby or distant lymph nodes. Regional lymph nodes usually occur in the same side of the primary tumor, but also occasionally reach the opposite side of the tumor in the midline of the body can be transferred to one or both of the lymph nodes.
3. Hematogenous metastasis: tumor cell invasion of blood vessels after the transfer with the flow of blood throughout the body known as metastasis. Common in a variety of sarcomas, endocrine carcinoma and undifferentiated carcinoma, direct invasion of blood vessels or lymphatic vessels in the tumor cells with the re-entry bloodstream to reach other parts. The most common sites of metastases are lung, brain, liver and bone. Gastrointestinal carcinoma often transferred to the liver and lung, breast, kidney, osteosarcoma, etc. often transferred to the lungs, lung cancer and easy transfer to the brain, prostate cancer metastasis to the bone easily. Invasive tumor cells of human venous system, the first transfer to the lungs, and then spread through the heart to the body organs. Digestive tract malignant tumors often invade the liver portal venous system. Blood poured transfer is an important way sarcoma metastasis.
Transfer and spread of malignant ways, 4. Direct spread: With the growing tumors, cancer cells often continuous along the interstitial, lymphatic, vascular or neural invasion and destruction of corset adjacent normal organs or tissues and continue to grow.

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