Leukemia is a cancer that forms in the tissue that makes blood. In a person that has leukemia, the bone marrow makes abnormal white blood cells which are called leukemia cells. They crowd the normal cells, red blood cells, white blood cells, and platelets, and keep those cells from doing what they are supposed to do. There are two main types of leukemia:
- Lymphocytic leukemia - affects the lymphocytes which make lymphatic tissue. This tissue makes up the immune system.
- Myelogenous leukemia - affects the myeloid cells which make red and white blood cells and cells that make platelets.
- Acute Myelogenous Leukemia (AML)
- Acute Lymphocytic Leukemia (ALL)
- Chronic Myelogenous Leukemia (CML)
- Chronic Lymphocytic Leukemia (CLL)
any of a group of cancerous diseases of the blood-forming organs, resulting in an abnormal increase in the production of leukocytes, often accompanied by anemia and enlargement of the lymph nodes, spleen, and liver
also sp. leu·kae′mia
Origin of leukemiaModL: see leuco- and -emia
Any of various acute or chronic neoplastic diseases of the bone marrow in which unrestrained proliferation of white blood cells occurs, usually accompanied by anemia, impaired blood clotting, and enlargement of the lymph nodes, liver, and spleen.
(countable and uncountable, plural leukemias)
- (US) A type of malignancy affecting the blood cells or blood-forming tissues.
- (US, countable) Any specific form or type of cancer of the blood-forming tissues.
- The subjects suffered from lymphoblastic and myeloid leukemias.
From German LeukÃ¤mie, from Ancient Greek Î»ÎµÏ…ÎºÏŒÏ‚ (leukos, “white") and Î±á¼·Î¼Î± (haima, “blood").