Thursday, July 7, 2011

Leukemia

Leukemia (American English) or leukemia (British English) (Greek leukos - white, and Chaim - blood  is a type of blood cancer and bone marrow abnormal increase in white blood cells. Leukemia is a broad term for a wide range of diseases. In turn, this is part of a wider group of diseases called hematological neoplasms.

In 2000, some 256 000 children and adults around the world developed a form of leukemia, and 209 000 died from the disease. Over 90% of all leukemias diagnosed in adults .

SİGNS AND SYMPTOMS
damage to system of bone marrow, crowding out normal cells by the bone marrow with a large number of immature white blood cells, leading to a shortage of platelets, which play an important role in blood clotting. This means people with leukemia can easily crush bleeding, severe, or develop pinprick bleeds (petechiae).White blood cells that are involved in the fight against pathogens can be suppressed or dysfunctional. This can lead to a patient's immune system is unable to fight infections or simple start attacking other body cells. Since leukemias prevents the immune system from working normally, but some patients require frequent exposure of infected tonsils, mouth sores or diarrhea to life-threatening lung infections and opportunistic infections.Finally, can the red blood cell deficiency leads to anemia, leading to pallor and shortness of breath.Some patients experience other symptoms such as nausea, exhausted by fever, chills, night sweats and other flu-like symptoms or feel. Some patients experience nausea or a feeling of fullness from enlarged liver and spleen, it can lead to unintentional weight loss. Occur when the leukemic cells invade the central nervous system, neurological symptoms (especially headaches) can. All of the symptoms associated with leukemia can be attributed to other diseases. Consequently, the leukemia is always diagnosed through medical tests.Word of leukemia, "white blood", is a namesake of the disease won high white blood cell counts that most leukemia patients have before treatment. A large number of white blood cells are apparent when a blood sample under a microscope. Often, these extra white blood cells are immature or dysfunctional. An excessive number of cells can also interfere with the level of other cells, resulting in a harmful imbalance in the blood.Some leukemia patients do not have high white blood cell counts visible during a regular blood. This is a rare disease called aleukemia. Bone marrow still contains cancerous white blood cells, which upset the normal production of blood cells, but instead they remain in the bone marrow into the bloodstream, where they will be seen in the blood. Aleukemic for the patient, the white blood cells in the blood is normal or low. Aleukemia can occur in each of the four major types of leukemia and most recently in hairy leukemia. [