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WBC inclusions: Summary

The presence of atypical inclusions within the cytoplasm of neutrophils and other leukocytes should lead to a clinical investigation of these findings. Atypical neutrophil inclusions may be seen in the following disorders: Chediak-Higashi syndrome, May-Hegglin anomaly, Alder-Reilly anomaly, Fechtner, Sebastian, Epstein and Alport-like syndromes and in infectious and toxic conditions (in the form of Döhle bodies).
Although a specific entity may not be evident from examination of the peripheral blood alone, it is important that hematology technologists include a comment reporting on the presence of these inclusions or granules. A clinical investigation with further hematologic and genetic studies may be requested as a result of the hematologic findings.
Many of the disorders with atypical neutrophil cytoplasmic granules are also associated with platelet abnormalities, particularly giant platelets (lower image). Therefore, when atypical granules are recognized, scanning of the peripheral blood smear for atypical platelets may be revealing. These observations serve as readily identifiable markers for acquired and genetic human maladies, and as a guide for unraveling the reasons for a patient's suffering and impaired health.