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Leukemia with multiple phenotypic expressions.

S S Kaplan, J R Krause, C H Srodes

    American Journal of Clinical Pathology
    |August 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    This case study details a patient with leukemia exhibiting multiple phenotypes, including acute lymphoblastic leukemia (ALL) and chronic myelogenous leukemia (CML). It suggests a totipotent stem cell origin for variable leukemic expressions.

    Area of Science:

    • Hematology
    • Oncology
    • Genetics

    Background:

    • Leukemia encompasses diverse hematologic malignancies with varied clinical presentations.
    • Understanding the cellular origins and transformations of leukemia is crucial for diagnosis and treatment.

    Observation:

    • A patient initially diagnosed with acute lymphoblastic leukemia (ALL) later developed chronic myelogenous leukemia (CML).
    • Subsequent blast transformations were predominantly lymphoblastic, with a terminal myeloblastic transformation.
    • Genetic analysis revealed a smaller G group chromosome, suggesting an intrinsic leukemic process rather than chemotherapy induction.

    Findings:

    • The patient's clinical course and genetic findings challenge typical presentations of lymphoid blast crisis in CML.
    • The case supports the hypothesis of a totipotent stem cell undergoing leukemic transformation.

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  • This transformation can result in variable and simultaneous phenotypic expressions of leukemia.

    • Implications:

    • This case highlights the complex interrelationships between different types of leukemia.
    • It underscores the potential for a single stem cell abnormality to manifest in multiple leukemic forms.
    • Further research into totipotent stem cell behavior in leukemia is warranted.