RESUMO
Retrospective data was collected from 77 elderly acute myeloid leukemia (AML) patients treated with Azacitidine (AZA) and 50 elderly AML patients treated with intensive chemotherapy (IC) from 4 Portuguese Hospitals. Median OS was 10.6 months in those receiving AZA as 1st line. Response (overall response rate 44%) had a significant impact on overall survival (p=<0.0001). Median OS of the comparator IC cohort was significantly inferior to that observed in the cohort treated with AZA in first line (p=0.0104). These results support the efficacy of AZA in AML in the elderly in any line of treatment.
RESUMO
Hypereosinophilia, either clonal or reactive, has been described in association with multiple hematological malignancies. We describe a case of a patient presenting with hypereosinophilia that evolved into T-cell lymphoblastic lymphoma. Complete remission was achieved with chemotherapy; however, hypereosinophilia recurred 5 months later in association with myeloblastic bone marrow infiltration and without evidence of lymphoblastic lymphoma relapse. Cytogenetic analysis of the bone marrow showed a complex translocation involving chromosomes 7, 12, and 16. A rearrangement of ETV6 gene (12p13) was demonstrated by FISH studies, thus confirming the clonality of this population. The association of lymphoblastic lymphoma, eosinophilia, and myeloid hyperplasia has been described in disorders with FGFR1 rearrangements. We hypothesize that other clonal eosinophilic disorders lacking this rearrangement could behave in a similar fashion through different pathogenic mechanisms.