Insidens: Leukemia
Acute leukemia usually occurs in 3-6 patients per 100,000 inhabitants per year.
Acute lymphocytic leukemia is more common in children, being the most common tumor in childhood, is about 25 percent of all cancers in children younger than 15 years. The myeloid affects more adults, with an increasing incidence.
The prognosis for survival is worse with increasing age, are poor from 60 years and is also unfavorable when the diagnosis of acute leukemia in children (especially lymphocytes) occurs in children under 1 to 2 years and the older than 15 years.
Children with higher levels of white blood cells per ml to 20,000 diagnosed acute lymphocytic leukemia, have poorer response to standard treatment.
If there is involvement of the CNS or the testicle, is also considered a sign of worse prognosis.
In acute myeloid leukemia in children, a white blood cell count exceeds 100,000 per ml results in a poorer response to standard treatment. It is also considered poor prognosis if it is an AML secondary to myelodysplastic syndrome or cytogenetic factors have as monosomy 7, 5 and others.
The course of the disease has better prognosis in women than in men.
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