A 54 year old woman complains of increasing fatigue and easy bruising of 3 weeks’ duration. Physical findings included pale, scattered ecchymoses and petechiae and mild hepatosplenomegaly. Blood count: RBC- 2,5 • 1012//; Hb - 73 g/l; Ht - 20%; PLT- 23 • 109//; and WBC-162 • 109// with 82% blasts, that contained Auric rods; peroxidase stain was positive. What is the most probable diagnosis?