Acute megakaryoblastic leukaemia with extreme thrombocytosis and p190(bcr/abl)rearrangement.

Abstract:

:Acute megakaryoblastic leukaemia (AML-M7) is an uncommon disease, composing 0.5-1.2% of newly diagnosed adult acute myeloid leukaemias (AML). It is characterised by higher incidence and complexity of cytogenetic abnormalities. We report a rare case of Philadelphia (Ph) chromosome-positive AML-M7, presenting with extreme thrombocytosis and having a poor outcome. The diagnosis was established on the basis of morphological and flow cytometry data for megakaryoblastic proliferation in the bone marrow. Cytogenetics revealed 47,XX,+8,t(9;22)(q34;q11), and p190(BCR-ABL)-rearrangement was detected. MDR1-gene overexpression was not demonstrated; however, the patient was resistant to therapy and died in 6 months. The reported case contributes to the overt heterogeneity of Ph-positive AMLs, which warrants further investigation and understanding.

journal_name

Ann Hematol

journal_title

Annals of hematology

authors

Balatzenko G,Guenova M,Zechev J,Toshkov S

doi

10.1007/s00277-003-0783-1

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

381-5

issue

6

eissn

0939-5555

issn

1432-0584

journal_volume

83

pub_type

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