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The morphological, immunophenotypical and cytogenetic characteristics study of blast crisis in chronic myeloid leukemia
Author(s): 
Pages: 685-687
Year: Issue:  10
Journal: CHINESE JOURNAL OF INTERNAL MEDICINE

Keyword:  白血病髓样慢性原始细胞危象免疫表型分型染色体;
Abstract: 目的探讨慢性髓细胞白血病急变期(CML-BC)的形态学、免疫表型和细胞遗传学(MIC)特征.方法对31例CML-BC患者骨髓涂片进行形态学和细胞化学染色分析,采用微量全血法及流式细胞仪进行细胞免疫分型,细胞遗传学采用直接法或短期培养法制备染色体标本,采用R显带技术进行核型分析.结果免疫分型结果显示:急变为急性髓细胞白血病(AML)23例占74.2%;急性淋巴细胞白血病(ALL)5例占16.1%,均为B系ALL,其中4例同时伴有髓系表达;急性未分化细胞白血病1例,B系和髓系急性混合细胞白血病(AMLL)2例.31例CML-BC中21例(67.7%)的急变患者CD+34,其中4/5(80.0%)ALL,15/23(65.2%)AML,2/2 AMLL均为CD+34.AML急变患者中具有CD7和CD34共表达者为8/23(占34.8%).细胞遗传学分析表明,14/27(51.9%)的急变期患者出现Ph染色体以外的附加核型异常,其中有+8(3/14),+Ph(3/14),i(17q)(2/14),Y染色体丢失(1/14)及复杂易位(5/14).结论 CML-BC是一干细胞疾病,原始细胞分化阻滞在早期阶段,故预后差.MIC分型在CML-BC诊断,预后判断及指导治疗方面均有重要价值.
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