Treatment of myeloid blastic crisis of chronic myelogenous leukemia.

Patients with myeloid blastic crisis of chronic myelogenous leukemia were treated by chemotherapy or by autologous hematopoietic reconstitution after aggressive chemotherapy. Chemotherapy alone failed to produce a second chronic phase. Autologous transplantation resulted in the establishment of a second chronic phase in two of ten patients treated with a four-drug regimen, while treatment with high-dose cytarabine with or without busulfan resulted in the establishment of a second chronic phase in three of six patients and the return of normal hematopoiesis in a fourth. Consolidation chemotherapy appeared to be beneficial.