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Related Concept Videos

Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
Disorders of Leukocytes01:27

Disorders of Leukocytes

Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune system...

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The story of chronic myeloid leukaemia.

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Chronic myelomonocytic leukaemia.

C G Geary, D Catovsky, E Wiltshaw

    British Journal of Haematology
    |July 1, 1975
    PubMed
    Summary

    This study details chronic myelomonocytic leukaemia (CMML) in 18 elderly patients, noting insidious onset and characteristic blood/marrow findings. Early recognition is key, as intensive chemotherapy may not be the optimal treatment strategy.

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    Published on: November 10, 2023

    Area of Science:

    • Hematology
    • Oncology
    • Cell Biology

    Background:

    • Chronic myelomonocytic leukaemia (CMML) is a heterogeneous myeloid malignancy.
    • Understanding the natural history and specific hematological features of CMML is crucial for diagnosis and management.
    • Previous studies have highlighted variability in CMML presentation and progression.

    Purpose of the Study:

    • To describe the natural history and hematological characteristics of 18 patients with chronic myelomonocytic leukaemia.
    • To identify key diagnostic features in blood and bone marrow aspirates.
    • To inform optimal patient management strategies.

    Main Methods:

    • Retrospective analysis of clinical and hematological data from 18 CMML patients.
    • Morphological examination of peripheral blood films.
    • Analysis of bone marrow aspirates.
    • Assessment of serum lysozyme levels.

    Main Results:

    • The majority of patients were elderly females with an insidious onset.
    • Common presenting features included monocytosis, leucopenia, or thrombocytopenia.
    • Characteristic findings were abnormal monocytosis and granulocytosis in blood, 'paramyeloid' cells, hypercellular marrow with granulocytic hyperplasia, and elevated serum lysozyme.
    • Five-year survival was observed in 5/18 cases, with 10 living 2 years or longer.
    • Transformation to acute myelomonocytic leukaemia occurred in some patients.

    Conclusions:

    • CMML presents a spectrum of features, often with insidious onset and distinctive hematological abnormalities.
    • The presence of 'paramyeloid' cells and specific bone marrow findings are characteristic.
    • Patients with CMML may benefit from management strategies that avoid intensive chemotherapy.