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CLL is primarily a disease of older adults, with 9 out of 10 cases occurring after the age of 50 years. The median age of diagnosis is 70 years. In young people, new cases of CLL are twice as likely to be diagnosed in men than in women.
353,500 (2015) [8] Leukemia ( also spelled leukaemia and pronounced / luːˈkiːmiːə / [1] loo-KEE-mee-ə) is a group of blood cancers that usually begin in the bone marrow and result in high numbers of abnormal blood cells. [9] These blood cells are not fully developed and are called blasts or leukemia cells. [2]
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. About 1-10% of CLL/SLLs develop a Richter's transformation at a rate of 0.5–1% per year.
Diagnosis is typically Acute lymphoblastic leukemia based on blood tests and bone marrow examination. Acute lymphoblastic leukemia is typically treated initially with chemotherapy aimed at bringing about remission. This is then followed by further chemotherapy typically over a number of years.
According to the WHO criteria, the diagnosis of AML is established by demonstrating involvement of more than 20% of the blood and/or bone marrow by leukemic myeloblasts, except in three forms of acute myeloid leukemia with recurrent genetic abnormalities: t(8;21), inv(16) or t(16;16), and acute promyelocytic leukemia with PML-RARA, in which the ...
Acute promyelocytic leukemia represents 10–12% of AML cases. The median age is approximately 30–40 years, which is considerably younger than the other subtypes of AML (70 years), however in elderly population APL has peculiar characteristics. Incidence is higher among individuals of Latin American or South European origin.