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Chronic myelomonocytic leukemia with abnormal bone marrow eosinophils
1Department of Pathology, University of Colorado Health Science Center, Denver, CO 80262, USA. jason.hyde@uchsc.edu
Archives of Pathology & Laboratory Medicine
|August 30, 2003
Summary
Chronic myelomonocytic leukemia with eosinophilia (CMML-E) is rare. This case highlights bone marrow eosinophilia, with immature eosinophils resembling those in acute myelomonocytic leukemia.
Area of Science:
- Hematology
- Oncology
- Molecular Diagnostics
Background:
- Chronic myelomonocytic leukemia with eosinophilia (CMML-E) is a rare hematologic malignancy.
- It is often characterized by a specific translocation, t(5;12)(q33;p13).
- Typically, CMML-E presents with peripheral eosinophil counts exceeding 1500/microL.
Observation:
- A subset of CMML-E cases primarily exhibit bone marrow eosinophilia, differing from the typical presentation.
- This report details a case fitting this specific subset.
- Immature eosinophils in this case were morphologically indistinguishable from those observed in acute myelomonocytic leukemia.
Findings:
- The study identifies a case of CMML-E with predominant bone marrow eosinophilia.
- Morphological analysis revealed immature eosinophils similar to those found in acute myelomonocytic leukemia.
- This suggests a potential overlap or shared pathway in eosinophil differentiation.
Implications:
- This finding expands the understanding of CMML-E presentations.
- It may aid in refining diagnostic criteria for CMML-E, especially in cases with atypical peripheral blood counts.
- Further research into the molecular mechanisms underlying eosinophil maturation in CMML-E is warranted.