A CASE STUDY : Leukemias

Jun 18th, 2015
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Alabama State University
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Leukemias are cancers of the blood-forming tissues. White blood cells may be produced in excessive amounts and are unable to work properly which weakens the immune system. Blood cells are formed in the bone marrow, the soft, spongy center of bones. New (immature) blood cells are called blasts. Some blasts stay in the marrow to mature. Some travel to other parts of the body to mature. Normally, blood cells are produced in an orderly, controlled way, as the body needs them. This process helps keep us healthy. When leukemia develops, the body produces large numbers of abnormal blood cells. In most types of leukemia, the abnormal cells are white blood cells. The leukemia cells usually look different from normal blood cells, and they do not function properly. In both men and women, leukemia incidence is highest among whites and lowest among Chinese, Japanese, and Koreans. The incidence in men is about 50% higher than in women for all racial/ethnic groups except Vietnamese, among whom the male

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I.LEUKEMIALeukemias are cancers of the blood-forming tissues. White blood cells may be produced inexcessive amounts and are unable to work properly which weakens the immune system.Blood cells are formed in the bone marrow, the soft, spongy center of bones. New (immature)blood cells are called blasts. Some blasts stay in the marrow to mature. Some travel to other parts of thebody to mature. Normally, blood cells are produced in an orderly, controlled way, as the body needsthem. This process helps keep us healthy. When leukemia develops, the body produces large numbersof abnormal blood cells. In most types of leukemia, the abnormal cells are white blood cells. Theleukemia cells usually look different from normal blood cells, and they do not function properly. In bothmen and women, leukemia incidence is highest among whites and lowest among Chinese, Japanese, andKoreans. The incidence in men is about 50% higher than in women for all racial/ethnic groups exceptVietnamese, among whom the male rates are only slightly higher. Ethnic differences in the incidencerates are small in the youngest adult age group (30-54 years), but become more evident in each of theolder age groups. It is found that childhood leukemia rates are highest among Filipinos, followed bywhite Hispanics, non-Hispanic whites and blacks.Anatomy and physiologyBloodBlood is one of the connective tissues. As a connective tissue, it consists of cells and cellfragments (formed elements) suspended i

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