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International Journal of Clinical & Medical Images

ISSN: 2376-0249

Clinical-Medical Image - International Journal of Clinical & Medical Images (2021) Volume 8, Issue 4

Hemophagocytosis in Acute Myeloid Leukemia

Hemophagocytosis in Acute Myeloid Leukemia

Author(s): Elizabeth M Sagatys

A 57-year-old man presented with pancytopenia (hemoglobin 7.3 g/dL; platelets 50 k/uL; and white blood cell count 2.32 k/uL). Bone marrow aspirate showed 23% monoblasts and 22% promonocytes with significant hemophagocytosis. Blasts phagocytized red blood cells, other blasts, and monocytic cells (Figure 1). The monoblasts had abundant cytoplasm and small granules. A few blasts were vacuolated. The blasts expressed CD4, CD11b, CD11c, CD33, and HLA-DR, along with variable CD14, CD117, and CD13 by flow cytometry. CD34 was negative. Cytogenetics showed t(8;16)(p11.2;p13.3) in all 20 cells. He was diagnosed with acute monocytic leukemia with t(8;16)(p11.2;p13.3). In cases demonstrating hemophagocytosis within blasts, the cytogeneticist should be alerted to check for this translocation as it can sometimes be difficult to detect. These patients frequently develop coagulopathy and have a poor prognosis.

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