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E rosetting by leukemic monoblasts. A possible mechanism

R A Savage, R H Crabtree, P G Dyment

    American Journal of Clinical Pathology
    |July 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

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    Acute monoblastic leukemia can exhibit unusual immunologic properties, including heat-stable E-rosette formation, typically seen in T-cell acute leukemia. This case explores a potential mechanism for this anomalous finding in acute myeloid leukemia.

    Area of Science:

    • Hematology
    • Immunology
    • Oncology

    Background:

    • Acute monoblastic leukemia (AML-M5) is a subtype of acute myeloid leukemia.
    • Immunophenotyping is crucial for classifying acute leukemias.
    • Heat-stable E-rosette formation is a characteristic marker of T-cell acute lymphoblastic leukemia (T-ALL).

    Observation:

    • This case report details a patient with acute monoblastic leukemia.
    • The patient's leukemia cells demonstrated the ability to form heat-stable E-rosettes.
    • This immunologic property is atypical for acute monoblastic leukemia.

    Findings:

    • The study presents a rare instance of acute monoblastic leukemia with T-cell-like E-rosetting capabilities.
    • The findings challenge conventional immunophenotypic classifications.

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  • A potential mechanism for the anomalous E-rosetting is proposed.

    • Implications:

    • This case expands the understanding of immunologic heterogeneity in acute myeloid leukemia.
    • It may necessitate re-evaluation of diagnostic criteria for certain leukemia subtypes.
    • Further research into the molecular basis of anomalous E-rosetting in AML is warranted.