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Solitary plasmacytoma.

T Kayrouz, B Jose, A M Chu

    Journal of Surgical Oncology
    |September 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Solitary plasmacytoma patients treated with radiation showed distinct outcomes. Extramedullary plasmacytomas had a more favorable prognosis than osseous lesions, suggesting they are separate diseases.

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    Area of Science:

    • Oncology
    • Radiation Oncology
    • Hematology

    Background:

    • Solitary plasmacytoma is a rare plasma cell neoplasm.
    • Distinguishing between osseous and extramedullary solitary plasmacytoma is crucial for prognosis.
    • Understanding treatment outcomes informs clinical management strategies.

    Purpose of the Study:

    • To evaluate the treatment outcomes of solitary plasmacytoma patients.
    • To compare the prognosis of osseous versus extramedullary solitary plasmacytoma.
    • To investigate the potential distinction between these two entities.

    Main Methods:

    • Retrospective review of nine patients treated with radiation therapy between 1963 and 1980.
    • Inclusion criteria: biopsy-proven solitary plasmacytoma, normal bone marrow (<10% plasma cells), and no disseminated disease.

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  • Classification based on primary tumor site: osseous (6 patients) and extramedullary (3 patients).

    • Main Results:

    • All three extramedullary plasmacytomas remained disease-free for 4 to 10 years.
    • Of six osseous lesions, two progressed to multiple myeloma within 2-3 years.
    • Other osseous cases had varied outcomes including no evidence of disease (NED) or death from intercurrent illness.

    Conclusions:

    • Extramedullary solitary plasmacytoma demonstrates a more favorable prognosis compared to osseous solitary plasmacytoma.
    • Findings support the hypothesis that solitary plasmacytoma of bone and extramedullary plasmacytoma represent distinct disease entities.
    • Radiation therapy can be an effective treatment for solitary plasmacytoma, with outcomes varying by primary site.