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  • Title: [Childhood acute megakaryoblastic leukemia].
    Author: Lei Q, Liu Y, Tang SQ.
    Journal: Zhongguo Shi Yan Xue Ye Xue Za Zhi; 2007 Jun; 15(3):528-32. PubMed ID: 17605859.
    Abstract:
    The aim of this study was to investigate the clinical, pathological and biological features of acute megakaryoblastic leukemia in childhood. The morphology of cells was observed by means of bone marrow smear; the immunophenotype was detected by flow cytometry and immunohistochemistry assay. The results indicated that the fever, hemorrhage, hepatosplenomegaly and lymphadenopathy in this case were the primary presentations accompanying by leukocytosis, anemia and thrombocytopenia. An adequate marrow aspirate could not be obtained. At the time of diagnosis, the bone marrow had more than 30% megakaryoblasts in nucleated cells. Flow cytometric analysis revealed the dual expression of CD41 and CD61 by tumor cells in bone marrow. The histopathological examination of bone marrow demonstrated infiltration of large-sized CD42b(+) cells. According to all above mentioned results, this case was diagnosed as acute megakaryoblastic leukemia. In conclusion, childhood acute megakaryoblastic leukemia is a rare and easily misdiagnosed disease with poor prognosis. Flow cytometry analysis and immunohistochemistry assay of bone marrow can help in detecting this leukemia subtype and evaluating its prognosis.
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