Blasts are increased in the bone marrow with evidence of both monocytic and granulocytic differentiation. Dysplastic eosinophils (arrows) that contain a mixture of eosinophilic and basophilic granules characterize this disorder.FIG1 

Peter Maslak, Memorial Sloan-Kettering Cancer Center

Peter Maslak, Memorial Sloan-Kettering Cancer Center

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