Leukemia is a type of disorder of hematopoietic stem cell creation system which is also a disease that is malignant. Abnormalities of the ability to further differentiation and maturation of leukocytes stagnant at different developmental stages of cells in the bone marrow and other hematopoietic tissues. Figures accumulation of abnormal cells and infiltration of other organs and tissues, and normal hematopoietic function suppression. Leukemia generally cause anemia, bleeding infection, and symptoms of organ infiltration.
Leukemia or blood cancer occupy 2.5% of the total number of existing cancer. Around the world, every year there are approximately 47,150 people diagnosed as suffering from leukemia. And every year there are approximately 23 540 people who died of leukemia cases. In childhood cancer, leukemia risk will generally high at the age of 0-4 years, and in men and women digit ratio is 7 : 5.
Based on morphological characteristics and cell source, leukemia can be divided into the following categories :
1. Acute myeloid leukemia : a type of white blood cell proliferation of abnormal myeloid leukemia. Acute myeloid leukemia is characterized by the rapid proliferation of abnormal cells in the bone marrow and affect the growth of normal blood cells other.
2. Chronic Myeloid Leukemia : the clone disease in hematopoietic stem cell proliferation, which also has a proliferation of bone marrow, blood leukocytosis generally will multiply and have an enlarged spleen, symptoms of which is the main feature of chronic myeloid leukemia.
3. acute lymphoblastic leukemia : is a disorder in lymphoblastoid cell hyperplasia and abnormalities in lymphoblastoid cells or differentiation formation of a large number of mature white blood cells in the block, which is a leukemia that could thrive.
4. Chronic lymphocytic leukemia : This type of leukemia is a malignant tumor that affects lymphocytes, chronic lymphocytic leukemia is characterized by a large number of immature lymphocytes cell aggregation, inhibit normal hematopoietic bone marrow.
Although many factors are suspected to be the cause of leukemia, but the cause of leukemia can not be ruled out completely. Causes of leukemia generally be due to infection, radiation factors, chemical factors and genetic factors.
symptoms of leukemia
1. Anemia : apparent is colored pale face, dizziness, palpitations , etc.
2. Fever : fever or heat that sometimes arise sometimes improved, body temperature is usually around 37.5 to 40 ℃ or even higher.
3. Bleeding : bleeding usually occurs in some parts of the body, such as the nasal cavity, oral cavity, gums, and other parts.
4. Lymph nodes: enlarged lymph nodes throughout the body, more commonly found in patients with acute lymphoblastic leukemia.
5. Enlargement of the liver and spleen : 50 % of patients with leukemia generally have an enlarged liver and spleen, but is most often found in patients with acute lymphoblastic leukemia.
6. Infection nervous system : arachnoid, meninges ( lining of the brain ) etc occur leukocyte infiltration, resulting in increased intracranial pressure and limb paralysis.
7. Other symptoms : When the infiltration of cancer cells to other parts of the respiratory, gastrointestinal, and urogenital systems will be affected by pleural effusion, and symptoms of gastrointestinal dysfunction and proteinuria.
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Leukimia
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