Prognostic factors and treatment effects on survival in erythroleukemia: A retrospective study of 134 cases

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Abstract
A total of 134 cases of erythroleukemia (119 from the literature and 15 of the authors' patients) were reviewed in an attempt to correlate survival with age, sex, hepatomegaly, splenomegaly, lymphadenopathy, infection, or hemorrhagic complications at initial presentation; hemoglobin (Hgb), white blood cell (WBC) count, and platelet count; percent myeloblasts in the marrow at diagnosis; and treatment regimens employed. Statistical methods included single classification analysis of variance, nonparametric analysis of variance (Kruskal-Wallis method), contingency table analysis, and correlation coefficient determination for numerical data. No significant correlation between survival and age, sex, hepatomegaly, lymphadenopathy, infection, or hemorrhagic phenomena was found. Improved survival was noted in patients without splenomegaly, and in daunorubicin-treated cases in contrast to those treated with other chemotherapeutic agents. A positive correlation between survival and initial Hgb and WBC was also noted. Erythroleukemia complicating a chronic myeloproliferative disorder had a worse prognosis than de novo erythroleukemia.

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