Leukemia is a cancer which starts in the bone marrow — when white blood cells grow abnormally without a clear cause. The presence of these cells interferes with the creation of other new regular cells within bone marrow, and causes a reduced count of red blood cells, normal white blood cells, and platelets. This can cause the sufferer to become anemic, experience unusual bleeding, experience sped up blood flow, and cause the patient more susceptible to infection. In addition to this, the cancer can spread to other areas of the body, such as the liver, spleen, and lymph nodes.
Leukemia is a particularly aggressive type of cancer, found across all ages but most commonly among the elderly. It is also one of the ten most common cancers found in Thailand.