[Chronic eosinophilic leukemia].

In this research one case of chronic myelogenous eosinophilic leukemia (pbe) transformed into myeloblastic crisis in male patient aged 24, efficiently treated chemotherapy with following performing allogenic bone marrow transplantation was represented. The patients was admitted to the Department of Hematology with the cause of increased leucocytosis (up to 19.9 x 10(9)/l), eosinophilia (up to 15.