Morphology in a patient of chronic eosinophilic leukemia with a FIP1L1-PDGFRA rearrangement. (A) The number of eosinophils increased (55.7%) in the peripheral blood (PB) smear (Wright-Giemsa, ×1,000). (B) The number of eosinophilic precursors and eosinophils was markedly increased, and equaled up to 36.2% in the bone marrow (BM) aspiration (Wright-Giemsa, ×1,000). Dysplastic eosinophils, including sparse granulation, nuclear hypersegmentation or hyposegmentation are shown in PB smear and BM aspiration (A, B).