A large number of cases of cancer identified in leukemia. Leukemia is a type of cancer of the blood and bone marrow. The disease is caused by the overproduction of immature blood cells (stem cells), which can not develop fully and to carry out normal blood cells.

According to their function and structure, there are three different types of cells in normal red blood cells, white cells and platelets. Through the process of blood formation, these three types of blood cells from a particular type developed by blood cells called stem cells. Stem cells divide and go through various stages and finally mature cells of the blood of a certain type with some important function in the body. The process by which a stem cell to mature blood cells in the bone marrow.

Depending on the speed of development and persistence of the disease, there are two types of leukemia: acute leukemia and chronic leukemia. Acute leukemia is known to grow very rapidly, while chronic leukemia develops slowly. A second influence on the types of blood cells due to disease, lymphatic leukemia or myelogenous can.

Lymphocytic and myeloid leukaemias are developed by different cell types: the type of lymphocytic leukemia cells called lymphoblasts or lymphocytes derived from spongy bone tissue, while the type of myeloid leukemia (sometimes referred myeloid leukemia and myeloid) develops from myeloid cells.

In acute leukemia, the abnormal cells from the first, cells are immature. These forms of the disease tend to have a very fast pace, due to the fact that the normal stem cells to multiply many times. leukemic cells are generally faster and share more frequently than normal stem cells, not simply stop the process of their division when they should. Sometimes the number of white blood cells are very high, while in other cases may be normal or low.

chronic leukemia, in addition to slow its development is different from acute leukemia on the degree of maturation of the cancer cells are able to achieve. Suffering from chronic leukemia stem cells achieve a higher level of maturity, but they are anomalies and can not behave like white blood cells do. In contrast to acute leukemia in the chronic form of the disease by the diseased cells have much longer life and tend to be in different parts of the body.

Leukemia affects people of all ages. Although children usually respond better to treatment of leukemia, and sometimes unable to cope with the disease, adults with little to this form of cancer.

Regardless of age and sex, many people are diagnosed with some forms of leukemia. Children tend to respond better to certain types of leukemia, while adults can barely cope with the disease. Cases of acute leukemia, chronic leukemia, approximately 10 percent. The elderly seem to be most affected by acute leukemia. About two thirds of cases of acute leukemia appear after age 60 years experience.