Myelodysplastic syndromes.
The myelodysplastic syndromes are a heterogeneous group of hematopoietic stem cell disorders characterized by dysplastic and ineffective hematopoiesis and a varying risk of transformation to acute leukemia. Although the natural history of these syndromes is variable, several factors appear to be of prognostic importance, including the French-American-British classification, the karyotype, in vitro colony formation, and others. The pathogenesis of the myelodysplastic syndrome is not known, but recent evidence suggests that alterations of cellular oncogenes may be a causative factor. There is no standard therapy for myelodysplasia, and thus novel approaches to patient management are warranted.
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D000368:Aged; D006801:Humans; D009190:Myelodysplastic Syndromes / Q000145:classification / Q000175:diagnosis / Q000235:genetics; D011379:Prognosis