• Blast population is heterogeneous exhibiting convoluted and folded nuclei
• Cytoplasmic granules
• No auer rods noted (explain auer rods)
• Some myeloid maturation
• Stains
• Myeloperoxidase (MPO) - Positive (explain MPO significance)
• Non Specific Esterase (NSE) 15 - 20% Positive (explain NSE significance)

Peripheral Blood	Peripheral Blood	Bone Marrow

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