title: Extremely long duration of chronic myeloid leukaemia with Ph1 negative and Ph1 positive bone marrow cells.
abstract: A male patient still surviving 17 years after the diagnosis of chronic myeloid leukaemic (CML) is described. A chromosome analysis of the bone marrow 16 years after the diagnosis revealed 84% Ph1 negative and 16% Ph1 positive cells, all containing the Y chromosome. The disease has been very sensitive to treatment with busulphan but bone marrow hypoplasia has not been induced. It is probable that in some CML patients with such a double cell population the prognosis may be extraordinarily good and that they run a considerable risk of being overtreated due to a pronounced sensitivity to alkylating drugs. Such rare cases should not serve as arguments for aggressive treatment of CML.
mesh_terms: D000368:Aged; D001853:Bone Marrow / Q000648:ultrastructure*; D001854:Bone Marrow Cells; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000175:diagnosis / Q000235:genetics*; D008297:Male; D011379:Prognosis; D012730:Sex Chromosomes