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  • Title: Myelofibrosis in chronic granulocytic leukaemia: clinicopathologic correlations and prognostic significance.
    Author: Lazzarino M, Morra E, Castello A, Inverardi D, Coci A, Pagnucco G, Magrini U, Zei G, Bernasconi C.
    Journal: Br J Haematol; 1986 Oct; 64(2):227-40. PubMed ID: 3465364.
    Abstract:
    We performed 221 marrow trephine biopsies in 139 patients with Ph1-positive (Ph1+) chronic granulocytic leukaemia (CGL) in order to assess the incidence, degree and prognostic significance of marrow fibrosis (MF) at various stages of the disease. We also attempted to elucidate the relationship between development of MF and the various clinical and haematological features of CGL. A significant correlation was found between the amount of fibrosis (graded from 0 to 3) and the stage of CGL, indicating that major fibrotic changes are associated with accelerated or blastic disease. Survival studies performed to assess the prognostic significance of the various degrees of MF, showed a progressively worse life-expectancy from grade 0 to grade 3 fibrosis. Multivariate regression analysis indicated Hb level, age, number of marrow megakaryocytes (MKs), time from diagnosis as the features most significantly correlated with the degree of MF. This study demonstrates that the natural history of CGL involves a progressive increase in reticulin deposition towards severe MF, although the rate of this progression varies widely. Monitoring changes of fibrosis with sequential biopsies could give a measure of the rate of progression of the disease and help in prognostic assessment of CGL patients. Our findings also confirm that among marrow features the number of MKs is the cytological variable most significantly correlated with MF.
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