Features of cytogenetic diagnosis of simultaneous chronic lymphocytic leukemia and myelodysplastic syndrome: clinical case report

In chronic lymphocytic leukemia, the risk of second tumors including hematological malignancies, with which the use of purine nucleosides and alkylating agents in treatment of chronic lymphocytic leukemia is most often associated, is significantly increased. Concurrent detection of this disease and various hematological tumors is a rare occurrence in hematological practice. Use of cytogenetic method or analysis allows to differentiate between 2 tumors and confirm differences in genetic abnormalities in different clones and on different levels of cell differentiation. This article presents a clinical case of simultaneous chronic lymphocytic leukemia and myelodysplastic syndrome with 2 clones with different cytogenetic abnormalities: partial trisomy of chromosome 12 and deletion of the long arm of chromosome 5 formed at different levels of cell differentiation.

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