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J Pediatr ; 98(4): 565-8, 1981 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-7205482

RESUMO

Six children who developed acute myelomonocytic leukemia presented with a preleukemic syndrome. The incidence of preleukemic presentation of AMML was 17% of children with acute nonlymphocytic leukemia, or 2.9% of all children with acute leukemia at this institution, incidences similar to those in adults. During the preleukemic phase, which lasted from three to 35 months, all children had anemia, all had infectious complications, and three of six had hemorrhagic tendencies. Three received steroids before the diagnosis of AMML, and all had some objective response. Two patients died before receiving therapy for AMML. Four children who received AMML therapy with combinations including cytosine arabinoside and an anthracycline achieved complete remission. Ultimately, all patients died. Clues to diagnosis of preleukemia include unexplained cytopenias, either absolute or functional, peripheral blasts, progressive megaloblastosis with an elevated B12 value, dyserythropoiesis, abnormalities of nuclear segmentation, nonrandom chromosomal alterations, and reduced marrow colony to cluster ratio in vitro. Until there is a highly effective therapy for ANLL, precisely when to treat the child with preleukemia remains uncertain. However, treatment should be started before infectious complications or hemorrhagic tendencies become life-threatening.


Assuntos
Pré-Leucemia/diagnóstico , Adolescente , Contagem de Células Sanguíneas , Células da Medula Óssea , Criança , Pré-Escolar , Citarabina/uso terapêutico , Daunorrubicina/uso terapêutico , Doxorrubicina/uso terapêutico , Feminino , Humanos , Masculino , Pré-Leucemia/sangue , Pré-Leucemia/tratamento farmacológico
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