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What is cancer?

What is cancer?
 Our body is composed of many types of cells. As these cells are needed by them, these cells divide and grow in a controlled way. But sometimes it happens that the body does not need any of these cells, yet they continue to  grow. This abnormal development of cells is called cancer (which is usually produced from an abnormal cell) in which the cells lose normal control. Thus, a group of cells continuously increase uncontrolled, which attacks surrounding adjacent tissues, which reaches the distant parts of the body and spreads through the lymph or blood to other parts of the body. Cancer cells can grow in any tissue of the body.


 As the cancer cells grow and multiply, they take the form of a group of cancer cells called tumors. These tumors attack nearby tissues and destroy them. Tumor can cause cancers or non-cancerous. Cancer cells can spread from one place to the entire body.

 Initiation of Cancer.
 The change in the cell's genetic material is cancer. Changes in the genetic material of a cell can happen either by itself or by some agents or elements. These agents are Chemicals, Tobacco, Virus, Radiation and Sunlight. But it is not necessary that all cells are equally affected with these agents. A genetic defect in cells makes these agents susceptible to the body. Even long-term physical irritation can also make these agents susceptible to one cell.

 Growth of Cancer.
 Some agents or promoters cause to grow in the development of cancer. These agents may also contain some substances or medicines available in the environment such as sex hormone testosterone which is used to improve sexual desire and energy in older men. Unlike carcinogens, these promoters themselves do not cause cancer. Instead, these promoters promote the growth of cancer-affected cells. 


 How does Cancer Spread?
Cancer can grow directly in the surrounding tissues or spread to organs, whether they are away or nearby. 

Cancer can spread through the lymphatic system. This type of dispersal also occurs in carcinoma. For example, breast cancer usually spreads to the nearest lymph nodes in the vicinity and later it spread to other parts of the body. Cancer can also spread through blood flow. This type of spread is also found in sarcoma cancer.

 Types of Cancer.

There are many types of cancer, some of them are:

 1. Breast cancer
 2. Cervical cancer (cervical cancer)
 3. Mouth cancer (oral cancer)
 4. Prostate cancer (cancer of the prostate gland)
 5. uterine cancer (cervical cancer)
 6. Ovarian Cancer Cancer)
 7. Lung cancer (lung cancer)
 8. Stomach cancer
 9. Blood cancer (leukemia)
 10. Bone Cancer (Bone Cancer)
 11. Colorectal cancer (colon cancer)
 12. Throat cancer
 13. Liver cancer
 14. Vaginal cancer
 15. Skin cancer
 16. Bladder Cancer
 17. Pancreatic cancer
 18. Brain cancer (brain cancer)
 19. Lymphoma
 20. Kidney cancer (Kidney cancer)
 21. Testicular cancers

 Stages of Cancer.

 Cancer tissues can be divided into blood and blood forming tissues (leukemia and lymphomas) and "solid" tumors (solid mass of cells), often called cancer. Cancer can be carcinoma or sarcoma.



 Leukemia and lymphoma are blood cancer. Leukemia is produced from blood-borne cells, in which bone marrow and immature white blood cells with high amounts of blood flow are displaced instead of normal blood cells. Cancer lymph nodes are expanded in lymphoma. Lymphoma often begins with lymph nodes but it can also be found in the adjacent, genital, stomach, chest or intestine.

 Carcinoma is the most common type of cancer. In which cancer cells affect the internal and external parts of the body such as lungs, breast and stomach cancer. It starts with the epithelium tissue of the skin. Examples of carcinoma are cancer of the skin, lungs, colon, stomach, breast, prostate, and thyroid gland.

 Sarcoma: Tumors that occur in tissues associated with each other are called Common connective tissues include fat, blood vessels, nerves, bones, muscles, cartilage etc. 
 Examples of sarcoma are - leiomyosarcoma and osteosarcoma (bone cancer). Typically, this cancer is higher in older people.




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