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The second type of classification is by type of white blood cell affected: 1  Lymphocytic leukemia. This type of leukemia affects the lymphoid cells (lymphocytes), which form lymphoid or lymphatic tissue. 2  Myelogenous (my-uh-LOHJ-uh-nus) leukemia. This type of leukemia affects the myeloid cells.
People with leukemia often look pale because of anemia. Anemia is a condition in which the body has a low amount of red blood cells. Without enough red blood cells to carry oxygen to the body, anemia can cause symptoms such as: fatigue.