Epithelial Cancer

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Cancer is a “disease caused by an uncontrolled division of abnormal cells” resulting in a malignant tumor(Cancer.gov). There are three major types of cancer depending on what is affected. The first is the branch of epithelial cancers in which epithelial cells that line the many tracts of the body divide continuously and in a rapid growth. The other two are disorders of the bone marrow and the lymphatic system, or leukemias and lymphomas(Nathan). Leukemias mainly affect the bone marrow and the blood while lymphomas mainly affects the lymph nodes. However, it is possible to have cancerous lymphocytes to be found in both the bone marrow and the lymph nodes which makes it sometimes difficult to determine whether the cancer is leukemia or lymphoma.
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