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Acute lymphatic leukemia with mediastinal involvement.

E Conde, M Gonzalez, F Lopez

    Acta Haematologica
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

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    Mediastinal involvement in acute lymphatic leukemia is linked to older age, higher white blood cell counts, and poorer survival outcomes. Early detection through thoracic roentgenograms is crucial for understanding disease characteristics.

    Area of Science:

    • Pediatric Oncology
    • Hematology
    • Radiology

    Background:

    • Mediastinal involvement is a recognized complication in acute lymphatic leukemia (ALL).
    • Early thoracic roentgenograms can identify mediastinal masses in ALL patients.
    • Clinicobiological differences may exist between ALL patients with and without mediastinal involvement.

    Purpose of the Study:

    • To compare clinicobiological characteristics of acute lymphatic leukemia patients with mediastinal involvement (Group A) versus those without (Group B).
    • To assess the impact of mediastinal involvement on treatment outcomes, including remission duration and survival.

    Main Methods:

    • Retrospective review of early thoracic roentgenograms from 43 acute lymphatic leukemia patients.
    • Comparison of demographic, hematologic, and immunophenotypic data between patients with (Group A) and without (Group B) mediastinal involvement.

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  • Analysis of complete remission rates, remission duration, and survival periods.

    • Main Results:

    • Mediastinal involvement was observed in 11 patients (Group A), who were older (13 vs. 7.4 years), had a higher male-to-female ratio (10:1 vs. 10:20), and significantly higher leukocyte counts (266 x 10(9)/L vs. 20 x 10(9)/L) compared to Group B.
    • Group A patients exhibited greater tumoral mass, more extrahematological involvement (45% vs. 15%), 'convoluted' cells, lower PAS-positivity, and higher acid phosphatase activity.
    • While complete remission rates were similar (80% vs. 93%), Group B patients had longer remission duration and survival periods. 50% of Group A patients relapsed within 6 months.

    Conclusions:

    • Mediastinal involvement in acute lymphatic leukemia is associated with distinct clinicobiological features and a poorer prognosis.
    • These findings highlight the importance of early mediastinal assessment in acute lymphatic leukemia management.
    • Further research may elucidate specific therapeutic strategies for acute lymphatic leukemia with mediastinal masses.