Two types Of chronic Myeloid Leukemia İn childhood, two cases report.

Chronlc myeloid leukemia accounts for 2-5% of cases of childhood leukemia. There are two types: adult type (A-CML) and juvenile type (J-CML). Juvenile type accounts for 18% of cases of the childhood myelodysplastic syndrome. Adult type is seen in the childhood period two fold of juvenile type. Leucocytosis, splenomegaly, lymphadenopathy, bone marrow elements in the periferic smear are the common findings. Skin rash, monocytosis, fetal hemoglobin above 10% and absence of Philadelphia (Ph) chromosome are the typical findings of J-CML and increase in the number of the megakaryocytic and eosinofilic series in the bone marrow, leucocytosis above 100.000/mm 3 and existence of Ph chromosome are the typical findings of A-CML. Since the chronic leukemia cases are rarely seen in the childhood period, we aimed to present two cases having mentioned symptoms, one of which is a 3 years old boy diagnosed as J-CML, the other is 4 years old boy diagnosed as A-CML.