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Leukemia (also spelled leukaemia; pronounced / luːˈkiːmiːə / [1] loo-KEE-mee-ə) is a group of blood cancers that usually begin in the bone marrow and produce high numbers of abnormal blood cells. [9] These blood cells are not fully developed and are called blasts or leukemia cells. [2]
Conventionally, a leukocytosis exceeding 50,000 WBC/mm 3 with a significant increase in early neutrophil precursors is referred to as a leukemoid reaction. [2] The peripheral blood smear may show myelocytes, metamyelocytes, promyelocytes, and rarely myeloblasts; however, there is a mixture of early mature neutrophil precursors, in contrast to the immature forms typically seen in acute leukemia.
T-cell acute lymphoblastic leukemia (T-ALL) is a type of acute lymphoblastic leukemia characterized by an aggressive malignant neoplasm of the bone marrow. [6] Acute lymphoblastic leukemia (ALL) is a condition wherein immature white blood cells accumulate in the bone marrow, crowding out normal white blood cells [7] and also accumulate in the liver, spleen, and lymph nodes.
Acute lymphoblastic leukemia (ALL) is a cancer of the lymphoid line of blood cells characterized by the development of large numbers of immature lymphocytes. [1] Symptoms may include feeling tired, pale skin color, fever , easy bleeding or bruising, enlarged lymph nodes , or bone pain. [ 1 ]
904,000 (2015) [6] Deaths. 60,700 (2015) [7] Chronic lymphocytic leukemia (CLL) is a type of cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell). [2][8] Early on, there are typically no symptoms. [2] Later, non-painful lymph node swelling, feeling tired, fever, night sweats, or weight loss for no clear reason ...
Acute myelomonocytic leukemia. Acute myelomonocytic leukemia (AMML) is a form of acute myeloid leukemia that involves a proliferation of CFU-GM myeloblasts and monoblasts. AMML occurs with a rapid increase amount in white blood cell count and is defined by more than 20% of myeloblast in the bone marrow. It is classified under "M4" in the French ...
Deaths. 147,100 (2015) [5] Acute myeloid leukemia (AML) is a cancer of the myeloid line of blood cells, characterized by the rapid growth of abnormal cells that build up in the bone marrow and blood and interfere with normal blood cell production. [1] Symptoms may include feeling tired, shortness of breath, easy bruising and bleeding, and ...
Chronic myelogenous leukemia (CML), also known as chronic myeloid leukemia, is a cancer of the white blood cells. It is a form of leukemia characterized by the increased and unregulated growth of myeloid cells in the bone marrow and the accumulation of these cells in the blood. CML is a clonal bone marrow stem cell disorder in which a ...