The most common types of cancer – What is cancer?

November 4, 2011 admin Cancer, 1

Norton

Cancer is a class of diseases that are increasingly in a group of cells and multiply in an uncontrolled manner and disorderly in our bodies have become increasingly poor and other damaged tissue healthy, sometimes spreads to other organs in the body via the lymphatic or blood condition and results can be fatal.

The growth of normal cells in normal conditions, cell growth is a natural process, without notice, even to grow every day millions of cells to replace millions of dead cells and keep your body in balance and in good health. Sometimes, the acceleration of cell growth is necessary to cut further damage to the organ of the body, such as wounding, etc. to prevent, but to fulfill the purposes that the growth of cells set back to normal again by our growth inhibitor of the body. Unfortunately, sometimes overwhelm skin cells, while healing the scars of the skin

the primary tumor. Size and primary tumor growth or primary tumor is a tumor on the original site where it has emerged, in which tumor progression and started on a mass surrender cancer. Some cancers may be different in court, like lymphomas and leukemias start. Most cancers are not detected until they form a mass so little like a grape. Cancer cells need a double before 42 ITCan produce cancer cells sufficient to cause death.

How cellsIf neighboring cancer cells enter the cancer cells grow to the size of the tumor, they can also attack and kill their neighboring cells through the production of abnormal or excessive chemical signals (hormones and cytokines ) that interfere with the normal chemical balance of the body and alter the metabolic pathways leading to cell violent and disorderly conduct.remote distribution

There are many ways to cause cancer as the formation of secondary cancers1. Local spread, lymph vessels, blood vessel1.1. Local spread when cancer cells to grow in their tumor size, it will penetrate the surrounding area. The reason for their actions is not yet known, but researchers suspect,

a. If the tumor grows, it takes more space by going to the nearby normal tissue in the vicinity of nature for its own survival.

b. Enzymes

tumors contain large amount of enzymes produced by cancer cells to survive by surrounding tissue to ensure that the path for themselves, invade healthy tissue. Scientists have a substance that plays in cancer cells that have an important role in local spread of the discovery cancers.1.2. That spreads through the lymph vessel certain cancer cells from the primary tumor and travel increase posted in a secondary cancer, but mostly they are in nearby lymph nodes nearest the tumor of origin.

1.3 captured. CirculationSimilar do shed blood through the lymphatic vessels, can kill cancer cells of the tumor origanl relieved to pass the blood flow by sliding the wall begin to open blood vessels and grow into secondary tumors because they are in a prisoner capillaries. It may sound horrible little, but only one to survive thousands of the magazine to a secondary cancer or metastasis. Form

2. Travel ChannelsOut lumps of cancer along the top of some cancer cells detached from the primary tumor can travel through other channels, but they did not randomly distributed, because some body parts are still prone to metastasis than other.

Arrival third of cancer cells to development siteThe the distance of the survival of cancer cells get trapped and grow in the second tumor is obvious, but researchers do not know how to enter the area of ??trapping other body organs. 4th AngiogenesisAngiogenesis as a process that defines the growth of new blood vessels from existing vessels. When they arrived in the area of ??detachment from the primary tumor. The secondary tumor, surrounding tissue, blood vessels, by persuading build with essential nutrients and oxygen because they are not as by the immune system, since some contaminants detected. 5 Etc Causes of cancer Cancer is primarily a disease of the environment with 90-95% of cases attributed to environmental factors and 5-10% can be divided in two by genetics.Causes groupsA cancer. Environmental factors The most common cause environmental causes of cancer are tobacco, diet and obesity, infections, radiation, lack of physical activity and environmental pollutants. Sometimes environmental factors to improve abnormalities in the genetic material of cells as a result zukommt.1 s immune system weakened immune system. chemicals chemicals such as chlorinated hydrocarbons, asbestos and hexavalent chromium have shown, can be carcinogenic DNA mutations increase, leading to the growth of cancer cells. There are certain chemicals that cause cancer, it can promote the rate of cell division, leading to less time for repair enzymes to repair damaged DNA during DNA replication, increasing the risk of cancer.2 . Dietines the United States, obesity is the development of many types of cancer associated, and is a factor of 14-20% of all cancer deaths. So there is no direct link between obesity cancer risk, but it can have negative effects on the immune and endocrine systems. third infection worldwide about 18% of cancers, infectious diseases combined. This is an indication of the virus are usually infectious agents that cause cancer, but the bacteria and parasites can also effect.4. Radiation Radiation can cause cancer in most parts of the body in all animals, and at any age, even if the radiation-induced solid tumors in general 10-15 years, and up to 40 years to clinically manifest and radiation-induced leukemia usually requires two -10 years to appear, due to exposure to radiation, ionizing and non-ionizing radiation. B. cause.Due deformities inherited certain class of genes in cell division and replication, such as oncogenes and tumor suppressor genes. hormonal factor C. hormones promote the development and dissemination of gender-related cancer, including breast, endometrial, prostate, ovary, testis, thyroid cancer and bone cancer. D. InflammationAlthough there are no signs of inflammation caused Caner, repeated violations of the same tissues could lead to excessive cell division and replication, which increases the risk of mutation in cancer. Classification of cancers E. And so on. Are the cell type that is classified malignant.1. CarcinomaCarcinoma is a malignant tumor of epithelial tissues in any location along the cavities and surfaces of structures glands found. Although the formation of epithelial malignant tumors are still unknown, but it has attributes and properties of epithelial cells, including breast, prostate, lung and colon cancer. 2 SarcomaSarcoma is a type of cancer cells originating from malignant tissue from embryonic germ cells or bone, cartilage and fat tissue and cells is formed.The third lymphoma and leukemia are multipotent hematopoietic stem cells that give rise to all blood cell types, including red blood cells, white cells and platelets for cancer

4. Germ cell tumor cancer from pluripotent cells. Adults are usually found in the testes and ovaries, but are more common in babies and young children.

5 BlastomaCancer immature “precursor” or embryonic tissues derived. They are also more common in children.Types of factor in the first also to cancer

Packaging: Due to a weakened immune system due to wear over the years. Some researchers have hypothesized that free radicals may be one of the participants.

or 2. Tobacco: the cells by chemical causes

change

Sunlight 3. Skin damage due to ultraviolet

4th ionizing radiation: All types of chemical hazards cause mutation5 genes. Viruses and bacteria: Same as above

6 above. Hormones: abnormal production of certain hormones may increase the risk of cancers related to sex

Cancer, common, most, Types

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