Abnormal Eosinophils With Large, Distinctly Basophilic Granules (Harlequin Cells) on Peripheral Blood Smear: A Clue for Diagnosing Chronic Myeloid Leukemia

By afschroeder • April 15, 2026

Cai J, Yue C, Tomassetti S. Abnormal Eosinophils With Large, Distinctly Basophilic Granules (Harlequin Cells) on Peripheral Blood Smear: A Clue for Diagnosing Chronic Myeloid Leukemia. J Hematol. 2026 Apr 6;15(2):99-107. doi: 10.14740/jh2196. PMID: 41983157; PMCID: PMC13071941.

Tags: Acute myeloid leukemia, Blood smear, CBFB::MYH11, chronic myeloid leukemia, Diagnostic screening, Harbor UCLA, Harlequin cells, Hematology/Oncology, Morphologic marker, Myeloproliferative neoplasm, primary myelofibrosis, Publications

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