Advanced chronic myelogenous leukemia (CML) in which the number of immature, abnormal white blood cells (myeloblasts or lymphoblasts) in the bone marrow and blood is extremely high. Also called Blast Phase.
Progression of disease in patient with Chronic Myelogenous Leukemia (CML) to an more acute phase which resembles Acute Myeloblastic leukemia (AML) with the appearance of many very immature cells (blast cells) in bone marrow and blood
The phase of chronic myelogenous leukemia in which more than 30% of the cells in the bone marrow or blood are blast cells (immature, abnormal white blood cells). Tiredness, fever, and an enlarged spleen also occur.