cancer, or cancer, is a general term for excessive growth of cells of various kinds. Benign and malignant in contrast, does not pose a threat to life, grow slowly, do not metastasize and are easy to treat.
most important forms of cancer are:
- cancers: malignant tumors of the skin, mucous membrane and glandular tissue.
- fibroids: Malignant tumors of bone, connective tissue and nervous tissue.
- Leukemia: cancer of the blood disorder is the development of white blood cells.
- Malignancies of the lymphatic system (lymphatic).
- Excessive proliferation of plasma cells.
Symptoms
- bowel movement. Emptied
- healing.
- blood clotting disorders.
- digestion and swallowing disorders.
- changes or signs of warts.
- Cough or hoarseness.
- Hemoptysis.
- decrease in body weight.
- weakness.
- United grade fever or high fever.
What causes cancer?
As a result of damage to genetic material of human body cells can develop into cancer cells. As a rule, this does not occur because the body's immune system be quickly discovers and destroys the cells changed. However, the immune system may be reduced. The mechanisms regulating cell division and the accompanying phenomena cease to function efficiently. Cancerous cells divide then no restrictions.
cell mutation
change the genetic material of cells may arise due to temperature, radiation or chemicals. Thanks to cell division errors in the information shall be forwarded to further generations of cells. If one or more of these cells have the ability to independently or continuous sharing, may lead to cancer development.
uncontrolled cell growth
relevant to the development of cancer occur due to uncontrollable cell growth. The mutant cells divide until they overcome immune system. Cancer cells spread, penetrate into the adjacent tissue and destroy it. This unrestricted passage into other tissues differentiates malignant from benign tumors.
tumor invades in all directions and destroying everything on the road. Why not get into the lymphatic vessels and blood vessels, which gets into the remote parts of the body and brought there to result in further tumor metastases.
factors that cause cancer
excessive, uncontrolled growth of cells has many causes. 75-80% of all types are caused environmental causes, whose effect is revealed only after many years.
cigarette smoking alone causes 30 percent of deaths due to cancer. Also, increasing environmental pollution causes cancer.
excess of high ionizing radiation (eg X-rays) causes leukemia, but too much ultraviolet rays of the sun contributes to the development of skin cancer. Also, improper diet (consumption of large quantities of meat and fat) is risky and can result in disease development.
Most cancers can be avoided by avoiding situations which are risk factors.
dangerous disease
lot of people are very afraid of cancer. It is fully justified. After cardiovascular disease is the second leading cause of death, and for people aged 45-65 years - the most common.
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