Shalinder Kaur Hooda* and Rania Medhat Seliem

Hematopathology Division, Department of Laboratory Medicine and Pathology, Dubai Health, United Arab EmiratesHematopathology Division, Department of Laboratory Medicine and Pathology, Dubai Health, United Arab Emirates

*Corresponding Author: Shalinder Kaur Hooda, Hematopathology Division, Department of Laboratory Medicine and Pathology, Dubai Health, United Arab Emirates.

Received: February 11, 2025; Published: March 07, 2025

Abstract

Introduction: Platelet satellitism is a phenomenon characterized by the adherence of platelets to polymorphonuclear leukocytes or other blood cells, resulting in a rosette-like appearance on peripheral blood smears, particularly with ethylenediaminetetraacetic acid (EDTA) anticoagulated whole blood samples [1]. The precise underlying mechanism of platelet satellitism remains to be fully elucidated but the current explanations include an immunologic mechanism, characterized by EDTA-dependent binding of serum IgG antibodies to both the platelet glycoprotein IIb/IIIa complex and neutrophil Fc gamma-receptors [2,3]; and a non-immunologic adherence mediated by thrombospondin or another alpha-granule protein [4].

Case Description: This report highlights two instances from a clinical laboratory where platelet satellitism led to misleadingly elevated eosinophil counts during automated blood count analysis. A peripheral blood smear review confirmed the spuriously elevated eosinophil count in both cases and a manual WBC differential count was performed to give accurate results for both the cases.

Conclusion: This article underscores the diagnostic challenges and the necessity for laboratory professionals to recognize and address anticoagulant-related artifacts to ensure accurate results. Platelet satellitism presenting as eosinophilia is an uncommon but important diagnostic consideration. Awareness of this artifact amongst laboratory staff is crucial to prevent misdiagnosis and avoid unnecessary patient investigations.

 Keywords: Platelet Satellitism; Ethylenediaminetetraacetic Acid (EDTA); Spurious Result; Eosinophilia

References

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Citation

Citation: Shalinder Kaur Hooda and Rania Medhat Seliem. “Platelet Puzzles – Platelet Satellitism Masquerading as Eosinophilia. A Case Report”.Acta Scientific Medical Sciences 9.4 (2025): 28-31.

Copyright

Copyright: © 2025 Shalinder Kaur Hooda and Rania Medhat Seliem. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.