Intermediate between Idiopathic Hypereosinophilia and Chronic Eosinophilic Leukemia: A Report of Two Hypereosinophilic Cases with Possible Novel Molecular Mutations

Figure 1

Bone marrow biopsy in a 17-year-old female with no significant past medical history. (a) H&E (400X magnification) section of the bone marrow biopsy, with trilineage hematopoiesis and a significant increase in eosinophils. (b) H&E (400X magnification) section of the bone marrow biopsy. (c), (d) Aspirate at high power (1000X magnification) showing an increase in mature eosinophils with occasional trilobed nuclei (arrow) and no increase in blasts.

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