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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 may occur.
The key factor that distinguishes low-count CLL/SLL-MLB, high-count CLL/SLL-MLB, and CLL/SLL is the number of circulating monoclonal B cells, as described above. However, the other MLB phenotypes may progress to and/or be mimicked by various monoclonal B-cell lymphocyte malignancies.
Among adults, the known causes are natural and artificial ionizing radiation and petrochemicals, notably benzene and alkylating chemotherapy agents for previous malignancies. [ 46 ] [ 47 ] [ 48 ] Use of tobacco is associated with a small increase in the risk of developing acute myeloid leukemia in adults. [ 46 ]
CLL/SLL is the most common adult leukemia in Western countries, accounting for 1.2% of the new cancers diagnosed each year in the United States. It usually occurs in older adults (median age at diagnosis 70) and follows an indolent course over many years. [11] About 1-10% of CLL/SLLs develop a Richter's transformation at a rate of 0.5–1% per ...
This disease is known for an indolent clinical course and incidental discovery. [1] The most common physical finding is moderate splenomegaly. B symptoms are seen in a third of cases, and recurrent infections due to anaemia and/or neutropenia [6] are seen in almost half of cases.
Lymphocytosis is an increase in the number or proportion of lymphocytes in the blood.Absolute lymphocytosis is the condition where there is an increase in the lymphocyte count beyond the normal range while relative lymphocytosis refers to the condition where the proportion of lymphocytes relative to white blood cell count is above the normal range.
Of course, there are probably other essential hormonal interactions that are interrupted, too, but that area is another scientific black hole, and progress has been slow due to a lack of research ...
Aggressive NK-cell leukemia is a disease with an aggressive, systemic proliferation of natural killer cells (NK cells) and a rapidly declining clinical course. [ 1 ] [ 2 ] [ 3 ] It is also called aggressive NK-cell lymphoma .