Cancer is not bone single disease but a complex of many disease. About two hundred distinct types of cancer have been recognized.
These can be grouped into four main types:-
1.Carcinomas
2.Sarcomas
3.Lymphomas
4. Leukemia
1. Carcinomas:- Carcinomas are tumours made up principally of epithelial cells of ectodermal of endodermal origin. The solid tumours nerve tissue and in tissues of body surfaces, or their attached glands, are examples of carcinomas. These include cervical, breast, skin, and brain carcinomas. About 85 percent of cancer are carcinomas.
2. Sarcomas:- Sarcomas are tumours made up principally of connective tissue cells, Which are of mesodermal origin. They are solid tumours growing from connective tissue. Cartilage bone and muscle. Although they account for most cancer studied in laboratory animals, they constitute only about 2 present human Cancer.
3. Lymphomas:- Lymphomas are Cancers in which there is excessive production of lymphocytes by the lymph nodes and spleen Hodgkin's disease is an example of a lymphoma. Lymphoma Constitute about 5 present of human Cancers.
4. Leukemia:- Leukemia are neoplastic growths of leucocytes (W.B.C) and are characterized by excessive production of the cells. They constitute about 4 present of human cancer.
Cancer cells
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ReplyDeleteThere are more than 100 types of cancer. The most common cancer types are breast cancer, prostate cancer, lung cancer, blood cancer, cervical cancer, ovarian cancer, brain cancer etc.
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