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. 2023 Nov 16;109(6):1825–1835. doi: 10.3324/haematol.2023.284311

Figure 1.

Figure 1.

A representative case of chronic eosinophilic leukemia, not otherwise specified. (A) A peripheral blood smear shows eosinophilia and basophilia (Wright-Giemsa, 500x). (B) The bone marrow biopsy is hypercellular with small hypolobated dysplastic megakaryocytes (hematoxylin and eosin, 200x). (C) A bone marrow aspirate smear shows increased eosinophils and precursors, some intermediate-stage eosinophils with eo-basophilic granules (Wright-Giemsa, 500x). (D) CD117 highlights increased scattered spindle mast cells (200x). The mast cells were positive for CD25 by flow cytometry (not shown).