KIT D816V Positive Acute Mast Cell Leukemia Associated with Normal Karyotype Acute Myeloid Leukemia

Figure 5

Bone marrow trephine biopsy showing a hypercellular marrow (a) with grade 2 fibrosis (b), and a preponderance of myeloid precursors with a diffuse proliferation of myeloperoxidase+ blast cells (c and d) and CD117+ mast cells (e and f). (a) Hematoxylin and eosin (H&E) stain, original amplification ×40. (b) Reticulin stain, original magnification ×100. (c) H&E stain, original amplification ×100. (d) MPO stain, original amplification ×100. (e) H&E stain, original amplification ×100. (f) CD117 stain, original amplification ×100.

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